RESUMEN
BACKGROUND: The potential influence of a preoperative anterolateral ligament (ALL) lesion seen on magnetic resonance imaging (MRI) on the mid- and long-term surgical outcomes of anterior cruciate ligament (ACL) reconstruction is still controversial. PURPOSE: To evaluate the clinical outcomes and failure rate of isolated ACL reconstruction at a minimum 5-year follow-up in patients with and without ALL injury diagnosed preoperatively using MRI. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A prospective cohort of patients with acute ACL injury was divided into 2 groups based on the presence (ALL injury group) or absence (control group) of ALL injury on preoperative MRI. This is a longer-term follow-up study of a previously published study that had a minimum 2-year follow-up. Both groups underwent anatomic isolated reconstruction of the ACL. The Lysholm and subjective International Knee Documentation Committee scores, KT-1000 arthrometer and pivot-shift tests, reconstruction failure rate, incidence of contralateral ACL injury, presence of associated meniscal injury, and presence of knee hyperextension were evaluated. The evaluation at the 5-year follow-up was also compared with the same patient's evaluation at 2 years of follow-up. RESULTS: A total of 156 patients were evaluated. No significant differences were found between the groups in the preoperative evaluation. In the postoperative evaluation, patients in the ALL injury group had a higher reconstruction failure rate (14.3% vs 4.6% for the control group; P = .049) and worse clinical outcomes according to the Lysholm scores (85.0 ± 10.3 vs 92.3 ± 6.6; P < .00001). Although the pivot-shift test results were similar, anteroposterior translation using the KT-1000 arthrometer revealed worse results for the ALL injury group (2.8 ± 1.4 mm vs 1.9 ± 1.3 mm; P = .00018). Patients in the ALL injury group also had an increase in KT-1000 arthrometer values from 2 to 5 years (2.4 ± 1.6 vs 2.8 ± 1.4; P = .038). Patients in the control group had no differences in outcomes from 2 to 5 years of follow-up. CONCLUSION: Combined ACL and ALL injuries were associated with significantly less favorable outcomes than were isolated ACL injuries at a minimum follow-up of 5 years after isolated ACL reconstruction with hamstring autograft. Patients with concomitant ALL injury showed a higher failure rate and worse functional scores. Also, knee stability tended to slightly worsen from 2 to 5 years in cases of associated ALL injury.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Imagen por Resonancia Magnética , Humanos , Reconstrucción del Ligamento Cruzado Anterior/métodos , Estudios Prospectivos , Lesiones del Ligamento Cruzado Anterior/cirugía , Adulto , Masculino , Femenino , Estudios de Seguimiento , Adulto Joven , Resultado del Tratamiento , Adolescente , Tendones Isquiotibiales/trasplanteRESUMEN
OBJECTIVE: The number of participants in sports or some form of recreation globally has led to an increase in the incidence of anterior cruciate ligament (ACL) injuries and the number of surgeries performed. Although it does not belong to risky surgical interventions, this operation is accompanied by complications that slow down post-operative rehabilitation. The objective is to analyze the effects of intra-articular (IA) injection of tranexamic acid (TXA) on the reduction of post-operative drained blood volume, pain intensity, and incidence of hemarthrosis after ACL reconstruction. METHODS: This prospective research included 124 patients undergoing ACL reconstruction surgery, randomly divided into two groups. The TXA group received IA TXA, whereas an equal amount of placebo was administered using the same route in the control group. RESULTS: The research has shown that IA injection of TXA effectively reduces post-operative blood loss (TXA group 71.29 ± 40.76 vs. control group 154.35 ± 81.45), reducing the intensity of post-operative pain (p < 0.001) and the incidence of hemarthrosis. CONCLUSION: The application of TXA significantly reduced post-operative bleeding and pain intensity, which accelerated the post-operative period.
OBJETIVO: El mayor número de participantes en deportes o alguna forma de recreación en todo el mundo ha llevado a un aumento en la incidencia de lesiones del ligamento cruzado anterior (LCA) y de las cirugías realizadas. Aunque no es una intervención quirúrgica de riesgo, esta operación va acompañada de complicaciones que ralentizan la rehabilitación posoperatoria. El objetivo es analizar los efectos de la inyección intraarticular de ácido tranexámico (TXA) sobre la reducción del volumen sanguíneo drenado posoperatorio, la intensidad del dolor y la incidencia de hemartrosis tras la reconstrucción del LCA. MÉTODO: Esta investigación prospectiva incluyó 124 pacientes sometidos a cirugía de reconstrucción del LCA, divididos aleatoriamente en dos grupos: uno recibió TXA intraarticular y otro (grupo de control) una cantidad igual de placebo por la misma vía. RESULTADOS: La investigación ha demostrado que la inyección intraarticular de TXA reduce efectivamente la pérdida de sangre posoperatoria (grupo TXA 71.29 ± 40.76 vs. grupo control 154.35 ± 81.45), reduciendo la intensidad del dolor posoperatorio (p < 0.001) y la incidencia de hemartrosis. CONCLUSIONES: La aplicación de TXA redujo significativamente el sangrado posoperatorio y la intensidad del dolor, lo que aceleró el posoperatorio.
Asunto(s)
Reconstrucción del Ligamento Cruzado Anterior , Antifibrinolíticos , Dolor Postoperatorio , Ácido Tranexámico , Humanos , Ácido Tranexámico/uso terapéutico , Ácido Tranexámico/administración & dosificación , Reconstrucción del Ligamento Cruzado Anterior/métodos , Antifibrinolíticos/uso terapéutico , Antifibrinolíticos/administración & dosificación , Femenino , Masculino , Estudios Prospectivos , Inyecciones Intraarticulares , Adulto , Dolor Postoperatorio/prevención & control , Dolor Postoperatorio/tratamiento farmacológico , Adulto Joven , Hemorragia Posoperatoria/prevención & control , Hemartrosis/prevención & control , Hemartrosis/etiología , Lesiones del Ligamento Cruzado Anterior/cirugía , Método Doble Ciego , Adolescente , Pérdida de Sangre Quirúrgica/prevención & controlRESUMEN
Stress concentration on the Anterior Cruciate Ligament Reconstruction (ACLr) for femoral drillings is crucial to understanding failures. Therefore, we described the graft stress for transtibial (TT), the anteromedial portal (AM), and hybrid transtibial (HTT) techniques during the anterior tibial translation and medial knee rotation in a finite element model. A healthy participant with a non-medical record of Anterior Cruciate Ligament rupture with regular sports practice underwent finite element analysis. We modeled TT, HTT, AM drillings, and the ACLr as hyperelastic isotropic material. The maximum Von Mises principal stresses and distributions were obtained from anterior tibial translation and medial rotation. During the anterior tibia translation, the HTT, TT, and AM drilling were 31.5 MPa, 34.6 Mpa, and 35.0 MPa, respectively. During the medial knee rotation, the AM, TT, and HTT drilling were 17.3 MPa, 20.3 Mpa, and 21.6 MPa, respectively. The stress was concentrated at the lateral aspect of ACLr,near the femoral tunnel for all techniques independent of the knee movement. Meanwhile, the AM tunnel concentrates the stress at the medial aspect of the ACLr body under medial rotation. The HTT better constrains the anterior tibia translation than AM and TT drillings, while AM does for medial knee rotation.
Asunto(s)
Reconstrucción del Ligamento Cruzado Anterior , Fémur , Análisis de Elementos Finitos , Estrés Mecánico , Tibia , Humanos , Reconstrucción del Ligamento Cruzado Anterior/métodos , Fémur/cirugía , Tibia/cirugía , Rotación , Masculino , Fenómenos Biomecánicos , Adulto , Articulación de la Rodilla/cirugía , Articulación de la Rodilla/fisiopatología , Lesiones del Ligamento Cruzado Anterior/cirugía , Lesiones del Ligamento Cruzado Anterior/fisiopatología , Ligamento Cruzado Anterior/cirugíaRESUMEN
INTRODUCTION: anterior cruciate ligament injuries (ACL) continue increasing in frecuency in the general population and sportmen who practice soccer and american football where we can locate 53% of the total of cases, the annual incidence is 70 per 100,000 persons. The incidence of this injuries has being increasing in women probably of the increase of the participation in such sports. OBJECTIVE: to document the causes of anterior cruciate ligament (ACL) plasty failure, as well as the diagnosis, surgical technique, and postoperative care of a revision ACL plasty surgery. MATERIAL AND METHODS: a search for relevant information, original research articles, clinical trials, and reviews in indexed journals was performed. RESULTS: anterior cruciate ligament injuries continue to increase among the general population and athletes who play soccer and American soccer mainly, in this population group we found 53% of the total cases. The gold standard for treatment is arthroscopic reconstruction of the ligament. ACL reconstruction surgery has good results, with an estimated 75-90% success rate. Long-term failures of anterior cruciate ligament repair represent 5-25%. Among the factors associated with this failure are technical errors, traumatic antecedents, biological factors, among others. CONCLUSIONS: in ACL revision surgery good results can be achieved with respect to graft stability, return to play and functional stability of the knee, but the results are generally inferior to those of primary ACL reconstruction.
INTRODUCCIÓN: las lesiones del ligamento cruzado anterior (LCA) continúan en aumento entre la población general y deportistas que practican fútbol soccer y americano en donde se encuentra 53% del total de los casos; la incidencia anual es de 70 por cada 100,000 personas. La incidencia de estas lesiones ha ido en aumento en mujeres, probablemente por el incremento de la participación deportiva. OBJETIVO: documentar las causas de fracaso de plastía de ligamento cruzado anterior (LCA), así como el diagnóstico, técnica quirúrgica, cuidado postquirúrgico de una cirugía de revisión de plastía LCA. MATERIAL Y MÉTODOS: se ha realizado una búsqueda de información relevante, artículos de investigación originales, ensayos clínicos y revisiones en revistas indexadas. RESULTADOS: las lesiones del ligamento cruzado anterior continúan en aumento entre la población general y deportistas que practican futbol soccer y americano principalmente; en este grupo de la población encontramos 53% del total de los casos. El estándar de oro para su tratamiento es la reconstrucción del ligamento por vía artroscópica. La cirugía de reconstrucción de LCA presentan buenos resultados, se estima 75-90% de éxito. Los fracasos a largo plazo de la reparación de ligamento cruzado anterior representan de 5-25%. Dentro de los factores asociados a este fracaso encontramos errores técnicos, antecedentes traumáticos, factores biológicos, entre otros. CONCLUSIONES: en la cirugía de revisión de LCA se pueden lograr buenos resultados con respecto a la estabilidad del injerto, regreso al juego y estabilidad funcional de la rodilla, pero los resultados son generalmente inferiores a los de la reconstrucción primaria del LCA.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Reoperación , Humanos , Reconstrucción del Ligamento Cruzado Anterior/métodos , Reoperación/estadística & datos numéricos , Lesiones del Ligamento Cruzado Anterior/cirugía , FemeninoRESUMEN
OBJECTIVE: Reconstructive surgery of the anterior cruciate ligament (ACL) is quite common, previous studies have documented that adequate pain control in the early phases of the postoperative period translates into early mobility and a rapid start of rehabilitation. Therefore, the search for new strategies for postoperative pain control is justified. The aim of this study was to compare intra-articular to the epidural administration of ropivacaine and midazolam as postoperative analgesia after arthroscopic ACL reconstruction with hamstring autograft (HA). MATERIAL AND METHODS: Double-blinded, prospective randomized clinical trial included 108 consecutive patients aged from 18 to 50 years that had undergone arthroscopic ACL reconstruction with HA. The patients were randomly assigned to 2 groups. The first group received intraarticular ropivacaine and midazolam. The second group received epidural ropivacaine and midazolam. The need for rescue analgesia, the postoperative pain experienced, side effects and complications of the analgesic drugs were evaluated. RESULTS: The intra-articular group received statistically significantly higher mean doses of rescue analgesia on the first two days (2.8 â± â1.0 vs. 1.3 â± â0.6 in the epidural group; p â= â0.001). Visual Analogue Scale scores at flexion were statistically significantly higher in the intra-articular group over the entire study period. The intra-articular group also reported a statistically significantly lower range-of-motion 87 â± â15 vs. 102 â± â11 in the epidural group (p â= â0.001). CONCLUSIONS: Epidural administration of ropivacaine combined with midazolam in patients undergoing primary ACL reconstruction with HA was clinically and significantly better relative to rescue analgesia and the intensity of pain in the first 48 postoperative hours when compared to intraarticular administration. There was no difference in terms of adverse effects and complications.
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Anestésicos Locales , Reconstrucción del Ligamento Cruzado Anterior , Artroscopía , Midazolam , Dolor Postoperatorio , Ropivacaína , Humanos , Ropivacaína/administración & dosificación , Ropivacaína/uso terapéutico , Adulto , Dolor Postoperatorio/tratamiento farmacológico , Dolor Postoperatorio/prevención & control , Reconstrucción del Ligamento Cruzado Anterior/métodos , Masculino , Femenino , Midazolam/administración & dosificación , Midazolam/uso terapéutico , Método Doble Ciego , Persona de Mediana Edad , Estudios Prospectivos , Anestésicos Locales/administración & dosificación , Anestésicos Locales/uso terapéutico , Adolescente , Inyecciones Intraarticulares , Artroscopía/métodos , Analgesia Epidural/métodos , Adulto Joven , Amidas/administración & dosificación , Amidas/uso terapéutico , Dimensión del Dolor , Autoinjertos , Resultado del TratamientoRESUMEN
IMPORTANCE: Return to sport (RTS) is considered an indicator of successful recovery after anterior cruciate ligament reconstruction (ACLR). In recent years, there has been major interest in documenting RTS following anterior cruciate ligament (ACL) injury. Despite women being at increased risk for ACL injuries and a global increase in women's participation in sports, research has not adequately focused on female athletes. OBJECTIVE: The purpose of this study is to conduct a systematic review and meta-analysis evaluating the RTS rate in female athletes after ACLR. We hypothesize that most of the female athletes can RTS. EVIDENCE REVIEW: A systematic review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Electronic databases (PubMed, Embase, and Epistemonikos) were searched for articles reporting RTS rates and contextual data in female athletes. The following search terms were used: "anterior cruciate ligament reconstruction" OR "ACL reconstruction" AND "female" OR "women" AND "return to sports" OR "return to play" to retrieve all relevant articles published between 2003 and 2023. A quality assessment of the included studies was conducted. FINDINGS: Fifteen articles were included, reporting on 1456 female athletes participating in pivoting sports. The included studies comprised 9 cohorts, 1 case-control study, 2 case series, 2 descriptive epidemiology studies, and 1 observational study. Eight out of fifteen studies focused solely on elite-level athletes. The participants had a mean age of 23.13 years. Soccer was the most prevalent sport among the participants, accounting for 49.7% of all athletes included. All 15 studies reported an RTS rate, yielding a meta-proportion of 69% [95% CI, 58-80%] for RTS. Nine articles reported the average time to RTS, which was 10.8 months [95% CI, 8.7-12.8 months]. CONCLUSIONS: This systematic review demonstrates that a majority of female athletes (69 â%) can RTS participation at an average of 10.8 months, however, the available information is insufficient, and quantitative data and reasons for not returning to play are lacking. Future studies should establish return-to-play criteria in this population and determine reasons for not returning to play. LEVEL OF EVIDENCE: III.
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Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Atletas , Volver al Deporte , Humanos , Reconstrucción del Ligamento Cruzado Anterior/métodos , Femenino , Volver al Deporte/estadística & datos numéricos , Lesiones del Ligamento Cruzado Anterior/cirugía , Atletas/estadística & datos numéricos , Traumatismos en Atletas/cirugíaRESUMEN
INTRODUCTION: The anterior cruciate ligament (ACL) is the most frequently injured ligament of the knee. However, quantitative studies on evaluate the postural control influence resulted from the ACL remnant preservation or not are scarce. The aim of this study is to evaluate the postural control of patients submitted to ACL reconstruction with and without preservation of the injured remnant in pre and postoperative periods. METHODS: Eighteen patients underwent ACL reconstruction and separated into 2 groups according to the preservation or not of the remnant: (I) submitted to ACL reconstruction with preservation of the remnant (10 patients); (II) submitted to ACL reconstruction without preservation of the remnant (8 patients). They were assessed using the Lysholm score and force plate, which evaluated the patient's postural stability for remnant and non-remnant preservation in ACL reconstruction surgery. RESULTS: Group I showed statistically significant subjective and objective improvements, both at 3 and 6 months. Additionally, improvement of the Lysholm test at 6 months in Group II was also statistically significant. Furthermore, the results of the Friedman test for the VCOP and VY variables of Group I, with support of the injured side in the force plate, showed a statistically significant difference both for pre and postoperative period at 3 months, compared to the 6-month postoperative period. The variables EAC and VX were statistically different for Group II, considering the preoperative period, 3 and 6 months postoperatively. CONCLUSION: Preserving the ACL remnant in patients with ACL injuries has a positive impact on postural stability during recovery.
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Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Humanos , Ligamento Cruzado Anterior/cirugía , Articulación de la Rodilla/cirugía , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Extremidad Inferior/cirugíaRESUMEN
PURPOSE: To compare patients undergoing anterior cruciate ligament (ACL) reconstruction with hamstring grafts 7 mm or less in diameter combined with anterolateral ligament (ALL) reconstruction versus isolated ACL reconstruction with grafts greater than 7 mm in diameter. METHODS: We retrospectively evaluated the descriptive data and clinical outcomes of patients who underwent primary ACL reconstruction with hamstring grafts from June 2013 to January 2020 and had a minimum follow-up period of 2 years. Patients with quadrupled or quintupled semitendinosus and gracilis autograft 7 mm or less in diameter combined with single-strand ALL reconstruction (ACL-ALL group) were matched in a 1:2 propensity ratio to patients who underwent isolated single-bundle ACL reconstruction with hamstring grafts greater than 7 mm (ACL group). RESULTS: We identified 30 patients in our database who met the criteria for the ACL-ALL group. The patients in this group were matched to 60 patients comprising the ACL group. Both groups were similar regarding all preoperative matched and unmatched variables. The mean ACL graft diameter was 6.8 ± 0.4 mm in the ACL-ALL group and 8.6 ± 0.6 mm in the ACL group (P < .001). The ACL-ALL group presented 1 failure (3.3%), and the ACL group presented 3 failures (5%) (P = .717). Postoperative KT-1000 measurements were similar between the groups (2.1 ± 1.1 mm vs 1.9 ± 1.2 mm, P = .114), as were postoperative pivot-shift grades (P = .652). Subjective International Knee Documentation Committee scores and Lysholm scores did not present any differences between the groups (P = .058 and P = .280, respectively). CONCLUSIONS: Patients who undergo combined ACL-ALL reconstruction with an ACL graft diameter of 7 mm or less can achieve similar results to patients who undergo isolated ACL reconstruction with a graft diameter greater than 7 mm. An associated ALL reconstruction can be performed to increase knee stability in patients with small-diameter hamstring grafts. LEVEL OF EVIDENCE: Level III, retrospective, comparative therapeutic trial.
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Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Músculos Isquiosurales , Tendones Isquiotibiales , Humanos , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Autoinjertos/trasplante , Músculos Isquiosurales/cirugía , Tendones Isquiotibiales/trasplante , Ligamentos , Estudios Retrospectivos , Tendones/cirugíaRESUMEN
Different surgical techniques have been proposed to reconstruct combined anterior cruciate (ACL) and lateral collateral ligaments (LCL). Although these surgical techniques are reliable and reproducible, the number of autologous grafts needed for the reconstruction could be a limiting factor, especially when patients present with multi-ligament knee injuries and the posterior cruciate ligament is also torn. In addition, some of these techniques are not easy to master and have a steep learning curve. We present a surgical procedure that has been used over the last 18 years to reconstruct combined ACL and LCL injuries and has become a reproducible, feasible and time-efficient procedure to approach combined ACL and LCL injuries using an ipsilateral hamstring autograft.
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Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Tendones Isquiotibiales , Ligamentos Laterales del Tobillo , Humanos , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Autoinjertos/cirugía , Articulación de la Rodilla/cirugía , Ligamentos Laterales del Tobillo/cirugía , Trasplante Autólogo , Tendones Isquiotibiales/trasplanteRESUMEN
BACKGROUND: Despite recent policy efforts to increase price transparency, obtaining estimated prices for surgery remains difficult for most patients and families. PURPOSE: Assess availability and variability of cost and self-pay discounts for pediatric anterior cruciate ligament (ACL) reconstruction in the United States. METHODS: This was a prospective study using scripted telephone calls to obtain price estimates and self-pay discounts for pediatric ACL reconstruction. From July to August 2020, investigators called 102 hospitals, 51 "top-ranked" pediatric orthopaedic hospitals and 51 "non-top ranked" hospitals randomly selected, to impersonate the parent of an uninsured child with a torn ACL. Hospital, surgeon, and anesthesia price estimates, availability of a self-pay discount, and number of calls and days required to obtain price estimates were recorded for each hospital. Hospitals were compared on the basis of ranking, teaching status, and region. RESULTS: Only 31/102 (30.3%) hospitals provided a complete price estimate. Overall, 52.9% of top-ranked hospitals were unable to provide any price information versus 31.4% of non-top-ranked hospitals ( P =0.027). There was a 6.1-fold difference between the lowest and highest complete price estimates (mean estimate $29,590, SD $14,975). The mean complete price estimate for top-ranked hospitals was higher than for non-top-ranked hospitals ($34,901 vs. $25,207; P =0.07). The mean complete price estimate varied significantly across US region ( P =0.014), with the greatest mean complete price in the Northeast ($41,812). Altogether, 38.2% hospitals specified a self-pay discount, but only a fraction disclosed exact dollar or percentage discounts. The mean self-pay discount from top-ranked hospitals was larger than that of non-top-ranked hospitals ($18,305 vs. $9902; P =0.011). An average of 3.1 calls (range 1.0 to 12.0) over 5 days (range 1 to 23) were needed to obtain price estimates. CONCLUSION: Price estimates for pediatric sports medicine procedures can be challenging to obtain, even for the educated consumer. Top-ranked hospitals and hospitals in the Northeast region may charge more than their counterparts. In all areas, self-pay discounts can be substantial if they can be identified but they potentially create an information disadvantage for unaware patients needing to pay out-of-pocket. STUDY DESIGN: Economic; Level of Evidence II. WHAT IS KNOWN ABOUT THE SUBJECT: Previous studies have highlighted the importance of value-based health care decisions and deficits of price transparency in various fields including pediatric and orthopaedics procedures. WHAT THIS STUDY ADDS TO EXISTING KNOWLEDGE: This study is the first to examine availability and variability of health care cost in pediatric sports medicine and the first to assess availability and magnitude of self-pay discounts, setting expectations for the uninsured patient incurring large out-of-pocket expenses.
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Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Niño , Costos de la Atención en Salud , Hospitales Pediátricos , Humanos , Estudios Prospectivos , Estados UnidosRESUMEN
INTRODUCCIÓN El error técnico más común durante la reconstrucción del ligamento cruzado anterior (LCA) es la ubicación incorrecta del túnel. Es incierto si un túnel tibial mal ubicado puede corregirse en el intraoperatorio. OBJETIVO Medir el desplazamiento del injerto de tejido blando con tornillos de interferencia tibial.MATERIALES Y MÉTODOS Estudio experimental ex vivo en 28 rodillas porcinas. Se cosechó el tendón flexor de la extremidad posterior, que fue duplicado y dimensionado para que pasara a través de un túnel tibial mal posicionado. Las muestras se dividieron en 4 grupos según el cuadrante de entrada (anterior [A], posterior [P], medial [M], o lateral [L]) de un tornillo de interferencia tibial de 9 mm con relación al injerto. Se ubicó una regla milimétrica en la meseta tibial, la cual fue fotografiada con una cámara EOS T6 (Canon Inc., Ota, Tokio, Japón), y la imagen fue digitalizada, y puesta en escala a tamaño. La distancia y dirección de los desplazamientos del injerto se midieron con Adobe Photoshop CC 2019 (San José, CA, EEUU). Se analizaron las diferencias medias entre los grupos por análisis de la varianza (analysis of variance, ANOVA, en inglés) unidireccional. El análisis estadístico se realizó con el programa Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, IBM Corp., Armonk, NY, EEUU), versión 25.0 (p ≤ 0,05)).RESULTADOS La distancias medias de los desplazamientos del injerto fueron similares en todos los grupos: A 4,4 mm; P 4,6 mm; M 4,5 mm; y L 4,3 mm, sin diferencias estadísticamente significativas (p = 0,894). Las direcciones medias de los desplazamientos del injerto también fueron similares entre los 4 grupos: A 176° (desviación estándar [DE]: ± 15,4°); P 165° (DE: ± 16,6°); M 166° (DE: ± 12,1°); y L 169° (DE: ± 10,6°). No se encontraron diferencias estadísticamente significativas (p = 0.42).CONCLUSIONES Independientemente del cuadrante de entrada, se observó un desplazamiento constante del injerto hacia el lado opuesto cuando el tornillo tibial alcanzaba la superficie articular. Relevancia clínica: el tornillo tibial mal posicionado puede corregirse en el intraoperatorio con fijación proximal en cuadrante específico, y debe alcanzar la superficie articular para generar un desplazamiento efectivo del injerto. Sin embargo, no podemos predecir la magnitud de error en todos los túneles mal brocados, que debe ser evaluada caso a caso.
BACKGROUND The most common technical error during anterior cruciate ligament (ACL) reconstruction is incorrect tunnel placement. It remains unclear if a misplaced tibial tunnel may be corrected intraoperatively. AIM To measure the displacement of soft-tissue grafts with tibial interference screws. MATERIALS AND METHODS Ex-vivo experimental study in 28 porcine knees. The flexor tendon of the posterior limb was harvested, doubled and sized to fit through a 9-mm misplaced tibial tunnel. The specimens were divided into 4 groups according to the quadrant of entry (anterior [A], posterior [P], medial [M], or lateral [L]) of a 9-mm tibial interference screw in relation to the graft. A millimetric ruler was placed at the tibial plateau, which was photographed with a an EOS T6 (Canon Inc., Ota, Tokio, Japan) camera, and the image was digitalized and scaled to size. The length and direction of the graft displacements were measured with Adobe Photoshop CC 2019 (San José, CA, US). The mean differences among the groups were analyzed through one-way analysis of variance (ANOVA). The statistical analysis was performed using the Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, IBM Corp., Armonk, NY, US) software, version 25.0 (p 0.05) RESULTS The mean lengths of the graft displacements were similar among the groups: A 4.4 mm; P 4.6 mm; M 4.5 mm; and L 4.3 mm, without statistically significant differences (p » 0.894). The mean directions of the graft displacements were also similar among the groups: A 176° (standard deviation [SD]: 15.4°); P 165° (SD: 16.6°); M 166° (SD: 12.1°); and L 169° (SD: 10.6°). No statistically significant differences were found (p » 0.42). CONCLUSIONS Regardless of the entry quadrant, constant graft displacement to the opposite side was observed when the tibial screw reached the articular surface. Clinical relevance: a misplaced tibial tunnel may be corrected intraoperatively with a quadrantspecific screw, which must reach the articular surface to produce an effective graft displacement. Nevertheless, we cannot predict the magnitude of this error in every poorly-drilled tibial tunnel; it should be assessed case by case.
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Animales , Tibia/cirugía , Tibia/trasplante , Procedimientos Ortopédicos/métodos , Reconstrucción del Ligamento Cruzado Anterior/métodos , Porcinos , Tornillos Óseos , Trasplante de TejidosRESUMEN
Background Persistent quadriceps weakness may occur after anterior cruciate ligament reconstruction, limiting the strength gain. However, steadiness strengthening might change the inability to gain strength. Hence, we determined whether strength training with force steadiness and visual biofeedback can improve knee quadriceps torque, self-reported pain and knee stability in patients with persistent quadriceps weakness after knee anterior cruciate ligament reconstruction. Methods Twenty-five patients (aged 43.7 ± 12.2 years) with persistent quadriceps weakness following knee anterior cruciate ligament reconstruction and 34-weeks of physiotherapy performed unilateral strength training for both lower limbs. Four-weeks of conventional physiotherapy at week-30 were given, confirming the inability to gain torque. Then, steadiness training (isometric knee extension with visual biofeedback) was given for 7-weeks. Knee quadriceps peak torque, strength improvement, determination of responders to the intervention, coherence of strength gain between limbs, and self-reported outcomes (pain and knee stability) were obtained. Descriptive statistics and data inference using mixed-ANOVA, McNemar test, and χ2 test were described. Findings Quadriceps torque in the reconstructed knee improved (98.2 ± 47.2-155.2 ± 78.9 Nm; p = 0.031) for most patients (84%). Nevertheless, the torque was lower than the healthy side maintaining asymmetry (155.2 ± 78.9 vs. 209.5 ± 101.8 Nm; p = 0.026). There was high (20%) and medium coherence (80%) between limbs. Knee stability and pain improved in 72% of the patients (p < 0.001). Interpretations Steadiness training after anterior cruciate ligament reconstruction followed 9 months of surgery and failed conventional physiotherapy, improves the persistent weakness and self-reported outcomes, but gain strength was dissimilar between limbs.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Entrenamiento de Fuerza , Adulto , Lesiones del Ligamento Cruzado Anterior/complicaciones , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Humanos , Articulación de la Rodilla/cirugía , Persona de Mediana Edad , Fuerza Muscular , Medición de Resultados Informados por el Paciente , Músculo Cuádriceps/cirugía , Autoinforme , TorqueRESUMEN
PURPOSE: The Anterior cruciate ligament (ACL) remnant has been pointed out as a ligamentization enhancer. Nonetheless, the remaining tissue can be functional if it still provides some stability or nonfunctional. This study intends to compare the clinical results and knee stability of functional vs. nonfunctional remnant preservation ACL reconstruction (ACLR). METHODS: One hundred and seventy-five patients with ACL injuries were included and underwent remnant preservation ACLR. They were divided into two groups accordingly to remnant tissue functionality: functional (Group F) and nonfunctional (Group NF). Primary outcome was defined as patient reported outcomes measured with Lysholm, IKDC and Tegner continuous scales and improvements. Secondary outcomes comprised of Lachman test, anterior drawer test, pivot shift test, extension and flexion deficit, graft coverage by remnant preserved tissue and failure rate (persistent instability or new ACL lesion). Menisci lesions, cartilage lesions and time to surgery were also recorded for each group. RESULTS: One hundred and forty-four patients were available at a mean of 30.2 ± 10.1 months: 69 Functional and 75 Nonfunctional. Lysholm, IKDC and Tegner functional outcomes demonstrated no difference between the groups, Functional compared to Nonfunctional: 88.4 ± 10.5 vs. 92.2 ± 4.9, n.s. and 83.2 ± 11.3 vs. 87 ± 5.3, n.s. and 6 (5-10) vs. 6 (5-9), n.s., respectively. Lysholm and IKDC functional outcomes improvements demonstrated differences between the groups: Functional compared to Nonfunctional (39.3 ± 9.4 vs. 42.3 ± 7.4, p = 0.014 and 37.7 ± 10 vs. 41.0 ± 6.6, p = 0.032); however, they were not clinically significant. Functional group showed more stability on physical examination pre- and post-operatively (p < 0.001, p < 0.001). There was no difference regarding extension deficit (n.s.); however, functional group had more flexion deficit (p = 0.02). Nonfunctional group had better graft coverage (p = 0.001). There was no difference regarding failure rate: 4% vs. 9%, (n.s.). CONCLUSION: Both remnant preservation ACLR techniques were able to achieve satisfactory functional outcomes. A functional remnant was not related to improved functional outcomes in comparison to a nonfunctional remnant; however, it was related to less laxity pre and postoperatively and inferior graft coverage. LEVEL OF EVIDENCE: II.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Ligamento Cruzado Anterior/cirugía , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Humanos , Articulación de la Rodilla/cirugía , Resultado del TratamientoRESUMEN
Repeat revision anterior cruciate ligament reconstruction (ACL-R) is a rare, demanding procedure and, as such, has not been well studied. Most of the available literature shows improved functional outcomes compared with preoperative state but inferior results when compared with primary ACL-R, particularly regarding return to preinjury level of sports. The purpose of this study was to assess functional outcomes in patients who had undergone repeat revision ACL-R. The secondary aims were to register return to sports, associated meniscal and/or chondral lesions, and evaluate radiological anatomical parameters. Nine patients between 2011 and 2017 were evaluated, who had a minimum follow-up of 2 years. Median age at repeat ACL-R was 32 years (interquartile range [IQR], 30-34 years) and the median follow-up was 27 months (IQR, 24-39 months). Data collected prior to surgery and at last follow-up included patient demographics, operative findings, physical examination findings including pivot shift and KT-1000 arthrometer measurement; Lysholm and International Knee Documentation Committee (IKDC) subjective scores; and return to sports and level using the Tegner score. Knee Injury and Osteoarthritis Outcome Score (KOOS) subjective score and radiographic anatomical parameters were recorded at last follow-up. Mean IKDC and Lysholm score improvement was 25 points (confidence interval [CI] 12-37) and 25 points (CI 11-39), respectively (p < 0.001). The median postoperative KOOS score was pain: 93 (IQR, 64-96); symptoms: 94 (IQR, 83-97); activities of daily life: 96 (IQR, 90-100); sports: 75 (IQR, 50-90); and quality of life: 50 (IQR, 43-81). Postoperative median side-to-side KT-1000 arthrometer difference was 2 mm (IQR, 1-8 mm). The median radiographic posterior tibial slope was 10 degrees (IQR, 9-10). One patient was considered a failure at 16 months postoperative. Only 44% (four out of nine) patients were able to return to their sports. None of these patients had a cartilage injury, while three out of five patients who did not return to their sports had International Cartilage Regeneration & Joint Preservation Society grade III or IV cartilage injury. Patients should be counseled on the challenging outcomes of repeat revision ACL-R. This is Level IV, therapeutic case series.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Inestabilidad de la Articulación , Lesiones del Ligamento Cruzado Anterior/etiología , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Preescolar , Estudios de Seguimiento , Humanos , Inestabilidad de la Articulación/etiología , Inestabilidad de la Articulación/cirugía , Articulación de la Rodilla/cirugía , Calidad de Vida , Reoperación , Volver al Deporte , Resultado del TratamientoRESUMEN
Introducción: En la reconstrucción del LCA, la pérdida de tejido muscular durante la extracción del injerto de tendones isquiotibiales dependerá del tamaño de stripper (tenótomo) que se utilice. El objetivo de este trabajo es comparar y cuantificar la pérdida de tejido muscular sano al realizar la extracción del injerto, y de esta forma poder evaluar una estrategia para reducir la morbilidad de la zona dadora.Materiales y métodos: realizamos un trabajo comparativo. Utilizamos diez preparados anatómicos (veinte rodillas) a los que se les realizó la extracción del injerto de isquiotibiales, semitendinoso y recto interno utilizando dos tenótomos (strippers) de distinto diámetro, de 5 y 7 mm. Evaluamos peso y volumen del tejido muscular resecado. Resultados: se compararon los resultados obtenidos, los que mostraron una diferencia estadísticamente significativa (p <0.01) tanto en el volumen como en el peso del material muscular extraído, en ambos músculos involucrados. Conclusión: nuestra hipótesis fue confirmada, encontramos diferencias que varían desde un 33 hasta un 65% más de peso de músculo sano extraído por la simple utilización de un tenótomo (stripper) de mayor diámetro al requerido. Recomendamos la utilización de tenótomo de 5 mm para disminuir la morbilidad de la zona dadora, y resecar menor volumen de tejido muscular. Nivel de Evidencia: III
Introduction: The loss of muscle tissue during hamstring graft harvest in ACL reconstruction, will depend on the size of the tendon stripper used. Our aim is to compare and quantify the loss of healthy muscle tissue when the graft is extracted, thus, be able to evaluate a strategy to reduce the donor site morbidity. Materials and methods: we harvested hamstring graft, semitendinosus and gracilis, in ten cadaver specimens (twenty knees) using two tendon strippers of 5 mm and 7 mm respectively. Then, we measured the weight and volume of the resected muscle tissue by each stripper. Results: outcome measures were compared, showing a statistically significant difference (p <0.01) in both, volume and weight of the extracted material, for both muscles involved.Conclusion: our hypothesis was confirmed. Results show a 33 to 65% higher weight and volume of healthy muscle tissue extraction, only by using a higher diameter stripper than the one required. We strongly recommend using a 5 mm stripper to reduce donor site morbidity and resect a lower volume of muscle tissue. Level of Evidence: III
Asunto(s)
Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Tendones IsquiotibialesRESUMEN
Introducción: el propósito de este trabajo es hacer una evaluación retrospectiva clínica, funcional e imagenológica de una serie de pacientes con esqueleto inmaduro Tanner I y II intervenidos quirúrgicamente mediante la técnica de preservación fisaria de reconstrucción extra e intraarticular con autoinjerto de bandeleta iliotibial, técnica de Micheli. Evaluar si existieron alteraciones del crecimiento o angulares relacionadas con la cirugía. Materiales y métodos: se analizaron un total de veintidós rodillas en veinte pacientes con edad ósea promedio de 10.1 años y un seguimiento promedio de 5.6 años. Se realizó una evaluación clínica de movilidad, estabilidad incluyendo artrometría KT-1000, escalas funcionales y valoración por imágenes de discrepancia de longitud de miembros inferiores, alteraciones angulares y evaluación de integridad por resonancia magnética.Resultados: no hubo déficit de la movilidad con respecto a la rodilla contralateral, el test de Lachman, Pivot shift y la evaluación con KT-1000 fue normal en el 91, 95 y 95% de los pacientes, respectivamente. Se presentaron dos re-rupturas del injerto (9%). No hubo deformidades angulares del fémur o tibia ni discrepancia longitudinal de las extremidades inferiores. Las escalas funcionales mostraron un IKDC de 95.4 y un IKDC pediátrico de 92.3 en los pacientes a los que se les alcanzó a aplicar esta escala. Lysholm de 94.1 y un Tegner de 7 con un retorno al mismo deporte o actividad que causó la lesión del 90%. En la evaluación por resonancia magnética, el 100% de los pacientes que no presentaron re-ruptura tuvieron integridad del injerto. Conclusión: el procedimiento quirúrgico es seguro, reproducible, restaura la estabilidad anteroposterior y rotacional de la rodilla, sin causar alteraciones del crecimiento en este grupo poblacional, obteniendo excelentes puntajes en las escalas de valoración subjetivas, y un alto índice de retorno deportivo con un porcentaje menor de re-rupturas. Nivel de Evidencia: IV
Introduction: the purpose of this paper is to retrospectively evaluate clinical, functional and imagenological outcomes of a series of patients with skeletal immaturity Tanner 1 and 2, surgically intervened by physis preservation intra and extra articular reconstruction with iliotibial band autograft method described by Micheli. Evaluate growth or angular disturbances related to the surgical technique. Materials and methods: twenty-two knees in twenty patients with average bone age 10.1 years were evaluated with a 5.6 year follow up. Clinical evaluation of ROM and stability was made by arthrometry KT-1000, functional scales were applied, image evaluation of length discrepancy, angular deformity and integrity evaluation by magnetic resonance were also done. Results: no ROM deficit compared with the contralateral knee was observed, Lachman, Pivot shift tests and KT-1000 evaluation were normal in 91, 95 and 95% of patients, respectively. There were two cases of graft rupture (9%). No angular femoral or tibial deformities or length discrepancies were observed. Functional scales showed IKDC 95.4, pediatric IKDC 92.3 in patients who underwent the scale, Lysholm 94.1 and Tegner 7 with return to sports of 90% to pre level activity. 100% of patients without graft rupture had graft integrity in the RM evaluation. Conclusion: the surgical technique is safe and reproductible, restores anteroposterior and rotational stability of the knee without growth arrest in this population, obtaining excellent scores in subjective rating scales, high return to sports index with low rerupture rates. Level of Evidence: IV
Asunto(s)
Niño , Estudios de Seguimiento , Ligamento Cruzado Anterior/cirugía , Resultado del Tratamiento , Reconstrucción del Ligamento Cruzado Anterior/métodos , Autoinjertos , Traumatismos de la Rodilla , Articulación de la Rodilla/cirugíaRESUMEN
Dada la creciente popularidad de las actividades deportivas, el número de roturas del ligamento cruzado anterior (LCA) y lesiones meniscales ha aumentado en particular en niños y adolescentes. El manejo de estas lesiones es desafiante debido las fisis abiertas. Por un lado las opciones de reconstrucción del LCA incluyen técnicas: transfisarias, extra-articulares y intraepifisarias. Por otro lado se han descrito diferentes técnicas de reparación meniscal: "all-inside", "inside-out" y "outside-in". Estas tiene como objetivo lograr la cicatrización meniscal, evitando los efectos adversos de la meniscectomía. Presentamos un reporte de caso de un adolescente de 14 años con una rotura completa del LCA y una lesión del cuerno posterior del menisco interno que fue sometido a una reconstrucción transfisaria del LCA y a una reparación meniscal "inside-out".
With the raising popularity of sporting activity, the number of anterior cruciate ligament (ACL) ruptures and meniscal tears has increased in particular in children and adolescents. Management of these injuries is challenging due to open growth plates. On the one hand the ACL reconstructions options includes: transphyseal, extra-articular and epiphyseal-only techniques. On the other hand there have been described different meniscal repair techniques: "all-inside", "inside-out" and "outside-in". These aim to achieve meniscal healing, avoiding the adverse effects of meniscectomy. We present a case report of a 14-year adolescent with an ACL complete rupture and a posterior horn tear of the medial meniscus who underwent an ACL transphyseal reconstruction and a "inside-out" meniscal repair.
Dada a crescente popularidade das atividades esportivas, o número de rupturas do ligamento cruzado anterior (LCA) e lesões meniscais aumentou especialmente em crianças e adolescentes. O manejo destas lesões é desafiador devido às fissuras abertas. Por um lado as opções de reconstrução do LCA incluem técnicas: transfisárias, extra-articulares e intraepifisárias. Por outro lado, foram descritas diferentes técnicas de reparação meniscal: "all-inside", "inside-out" e "outside-in". Estes têm como objetivo alcançar a cicatrização meniscal, evitando os efeitos adversos da meniscectomia. Apresentamos um relatório de caso de um adolescente de 14 anos com uma ruptura completa do LCA e uma lesão do corno posterior do menisco interno que foi submetido a uma reconstrução transfisária do LCA e a uma reparação meniscal "inside-out".
Asunto(s)
Humanos , Masculino , Adolescente , Reconstrucción del Ligamento Cruzado Anterior/instrumentación , Reconstrucción del Ligamento Cruzado Anterior/métodos , Lesiones del Ligamento Cruzado Anterior/cirugía , Lesiones del Ligamento Cruzado Anterior/diagnóstico por imagen , Lesiones de Menisco Tibial/cirugía , Lesiones de Menisco Tibial/diagnóstico por imagen , Factores de Edad , Resultado del Tratamiento , Reconstrucción del Ligamento Cruzado Anterior/efectos adversosRESUMEN
BACKGROUND: Anterior drawer test, Lachman test including evaluation of the endpoint, and pivot shift test have been commonly applied clinically in diagnosing anterior cruciate ligament (ACL) injury but how they function in the appraisal of partial ACL tears is less known. The aims of this study were to examine the diagnostic values of the commonly used knee function tests on patients in detecting ACL injury including partial injury patterns, to assess each of the test's predictive values on the specific ACL injury pattern, and to assess if using multiple tests collectively for the diagnosis of the injury could improve diagnostic accuracy. METHODS: We evaluated 36 consecutive patients who underwent ACL single bundle augmentation surgery. Those patients were matched by gender and age to 36 patients with a complete rupture of the ACL. Data was obtained from the patients' records. The rupture pattern was confirmed by arthroscopy. An examination under anesthesia was routinely performed by two surgeons who were blinded to the rupture pattern prior to surgery. RESULTS: Collectively using both Lachman test and pivot shift test increases ability to distinguish between partial tears and complete ruptures. When comparing partial PL tears and complete ruptures the pivot shift test is more important than the Lachman test. In diagnosing a complete rupture, the evaluation of the endpoint during the Lachman test is more sensitive than the evaluation of the anterior tibial translation during the Lachman test. CONCLUSION: Based on the findings of this study, a diagnostic algorithm has been implemented and is presented in this manuscript.
Asunto(s)
Lesiones del Ligamento Cruzado Anterior/diagnóstico , Ligamento Cruzado Anterior/diagnóstico por imagen , Artroscopía/métodos , Adulto , Ligamento Cruzado Anterior/cirugía , Lesiones del Ligamento Cruzado Anterior/fisiopatología , Reconstrucción del Ligamento Cruzado Anterior/métodos , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Examen Físico , Estudios Retrospectivos , RoturaRESUMEN
Background: Adjustable-length cortical suspension devices provide technical advantages over fixed-length devices for femoral graft fixation during anterior cruciate ligament (ACL) reconstruction but have shown increased lengthening during cyclic loading in biomechanical studies. The purpose of this study was to prospectively measure graft elongation in vivo along with patient reported outcomes. Methods: Thirty-seven skeletally mature patients diagnosed with anterior cruciate insufficiency who underwent ACL reconstruction using autogenous hamstring graft were included in this study. Thirteen patients received an ACL reconstruction using a fixed loop device (FL) and twenty-four patients were treated with an adjustable-length device (AL) based on surgeon preference. Bilateral knee laxity was measured with a KT1000 Arthrometer before surgery and immediately after surgery with the patient under anesthesia, and at the 6-week, 3-month, and 6-month clinical follow-up appointments. All measurements were made by the same operator with maximum force testing. Differences between the affected knee and the contralateral knee were measured. Patient reported outcomes were collected at 6 and 24 months post-operatively. Results: No difference was found between the FL and AL groups in either knee laxity or patient reported outcomes. Average side-to-side difference at 6 months was 1.8 ± 2.6 mm for the FL group and 1.7 ± 2.4 mm for the AL group (p=.874). One patient in the FL group (7.7%) and two in the AL group (9.5%) had a side to side difference in laxity greater 5 mm. Patient reported outcomes did not differ between groups and no patients underwent revision surgery. Conclusions: The adjustable-length cortical suspension device (AL) did not demonstrate increased laxity as compared to fixed-length devices. There was no difference in patient reported outcomes between the groups.Level of Evidence: IV.
Asunto(s)
Reconstrucción del Ligamento Cruzado Anterior/instrumentación , Músculos Isquiosurales/trasplante , Adulto , Reconstrucción del Ligamento Cruzado Anterior/métodos , Autoinjertos , Femenino , Humanos , Inestabilidad de la Articulación/fisiopatología , Masculino , Persona de Mediana Edad , Medición de Resultados Informados por el Paciente , Estudios Prospectivos , Adulto JovenRESUMEN
PURPOSE: The asymmetry of muscular strength after anterior cruciate ligament reconstruction (ACLR) is associated with increase in the development of new lesions. This asymmetry is precisely assessed by isokinetic dynamometry which is a high-cost technique, limited to major centers and hospitals. Thus, the aim of this study was to test the accuracy of one of the most frequently used functional questionnaires, the Lysholm score, to diagnose the knee torque deficit. METHODS: In total, 115 patients were evaluated after ACLR. Knee symptoms were evaluated using the Lysholm questionnaire and knee extensor and flexor peak torque during maximal isokinetic concentric contractions at 60° s-1 (5 repetitions) and 180° s-1 (15 repetitions). Patients with <20% peak torque deficit were considered symmetric (normal). RESULTS: An increase in the Lysholm score was associated with a deficit reduction in the peak torque of knee extensors at 60° s-1 (r = -0.294) and 180° s-1 (r = -0.297) (p < 0.05 for both). Cutoff Lysholm scores of >90 points for 60° s-1 allowed the correct diagnosis of symmetry in 71% and of >89 points for 180º·s-1 allowed the correct diagnosis of symmetry in 73%, for knee extensors. Patients with a Lysholm score of >89 points presented an isokinetic deficit 36% lower than patients with a Lysholm score of ≤89 points (p < 0.05). CONCLUSION: A Lysholm score of >89 points has predictive value for deficits in the peak torque of knee extension (<20%). However, replacement of the isokinetic evaluation by this instrument must be performed with caution because of its accuracy.