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Specific virulence factors that likely influence C. acnes invasion into deep tissues remain to be elucidated. Herein, we describe the frequency of C. acnes identification in deep tissue specimens of patients undergoing clean shoulder surgery and assess its phenotypic and genetic traits associated with virulence and antibiotic resistance patterns, compared with isolates from the skin of healthy volunteers. Multiple deep tissue specimens from the bone fragments, tendons, and bursa of 84 otherwise healthy patients undergoing primary clean-open and arthroscopic shoulder surgeries were aseptically collected. The overall yield of tissue sample cultures was 21.5% (55/255), with 11.8% (30/255) identified as C. acnes in 27.3% (23/84) of patients. Antibiotic resistance rates were low, with most strains expressing susceptibility to first-line antibiotics, while a few were resistant to penicillin and rifampicin. Phylotypes IB (73.3%) and II (23.3%) were predominant in deep tissue samples. Genomic analysis demonstrated differences in the pangenome of the isolates from the same clade. Even though strains displayed a range of pathogenic markers, such as biofilm formation, patients did not evolve to infection during the 1-year follow-up. This suggests that the presence of polyclonal C. acnes in multiple deep tissue samples does not necessarily indicate infection.

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Objective To investigate the factors that influence the functional results of patients submitted to the Latarjet procedure. Methods Evaluation of 26 patients submitted to surgical treatment following the Latarjet technique due to traumatic recurrent anterior dislocation of the glenohumeral joint, with glenoidal bone loss greater than 20% and/or off-track injury. The minimum follow-up time was of 12 months. The Visual Analogue Scale (VAS), The Western Ontario Shoulder Instability Index (WOSI), and the Subjective Shoulder Value (SSV) scales, as well as objective data from the participants, were evaluated. Results Most patients (84.62%) did not present recurrence of the dislocation, and 92.31% were satisfied. Regarding the functional analysis, the physical component score (PCS) and the mental component score (MCS) found were within the mean quality of life of the population. The physical symptoms, according to the WOSI, presented the best percentage (8.5%), while the worst result was observed regarding lifestyle (20%). On the VAS, pain was classified as moderate (3/10) by 15.38% of the patients (4/26). In relation to sports, patients who practice sports showed improvement in SSV parameters, which had an inverse relationship with the number of relapses. It was also observed that the shorter the time between the first dislocation and the surgery, the greater the patient's satisfaction. Conclusion Early indication of surgical treatment of anterior glenohumeral instability may provide better subjective functional results to the patient.

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Abstract Background and objectives The Beach Chair Position (BCP) has many advantages such as less neurovascular injury and better intra-articular visualization, but it has also negative consequences, including hemodynamic instability. Although maintaining normal Mean Arterial Pressure (MAP) is important, fluid management is also a crucial concept for hemodynamic stability. The main objective of this study is whether preloading before positioning would be effective for less hemodynamic instability. Methods This randomized, controlled study was conducted in a single center in the Istanbul University, Istanbul Faculty of Medicine. Forty-nine patients undergoing elective arthroscopic surgery in the BCP were recruited. In the study group, crystalloid fluid at 10 mL.kg-1 of ideal body weight was administered intravenously 30 min before the BCP for preloading. The primary outcome measures were differences of hemodynamic variables as MAP, Stroke Volume (SV), Heart Rate (HR), and Cardiac Output (CO). The secondary outcome measures were Postoperative Nausea and Vomiting (PONV) rates in postoperative first day, surgical satisfaction scale, total ephedrine dose used during surgery, and total amount of fluid. Results The MAP, CO, and SV measurements of the study group were higher than those of the control group in the 5th minute after the BCP (respectively, p= 0.001, p= 0.016, p= 0.01). The total amount of crystalloid and surgical satisfaction scales were higher in the study group (respectively, p= 0.016, p= 0.001). Total amount of colloid and ephedrine dose used in the intraoperative period, and PONV rates were lower in the study group (p= 0.003, p= 0.018, p= 0.019, respectively). Conclusion Consequently, preloading can be favorable approach to preserve hemodynamic stability.

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Abstract Introduction: Management of intraoperative hemodynamics and postoperative analgesia during arthroscopic shoulder surgeries remains a challenge. Although interscalene brachial plexus block (ISB) is considered ideal for shoulder anesthesia it requires skill and proficiency unlike intravenous (IV) dexmedetomidine. Objective: This randomized trial was performed to observe the efficacy of dexmedetomidine infusion which is less invasive and demands lesser skills than plexus block. Methodology: All patients scheduled for elective arthroscopic shoulder surgery under general anesthesia were assigned either to group DEX, which received an IV dexmedetomidine bolus of 0.5 mcg/kg over 20 minutes, followed by an infusion of 0.5 mcg/kg/hour that was stopped 30 minutes before surgery the end of surgery or to group BLOCK which received ultrasound guided ISB with 20ml of 0.25% bupivacaine. The primary outcome assessed was intraoperative hemodynamics; the secondary outcomes were immediate postoperative pain, operating condition as assessed by the surgeon, recovery time, and patient satisfaction after 24 hours. Blinded investigator and composite scores were used for the assessment. Results: Both groups displayed equivalent scores for intraoperative hemodynamics whereas ISB resulted in a better post-operative analgesia (p < 0.001). Surgeon's opinion and recovery time were comparable. Overall, the patients had a satisfactory experience with both techniques, according to the quality assessment. Conclusions: IV dexmedetomidine infusion is an effective alternative to ISB for reconstructive shoulder surgeries under general anesthesia.

Resumen Introducción: El manejo hemodinámico intraoperatorio y la analgesia postoperatoria durante la cirugía artroscópica de hombro sigue siendo un desafío. Aun cuando el bloqueo interescalénico del plexo braquial (BIE) se considera ideal para la anestesia del hombro, a diferencia del uso de la dexmedetomidina intravenosa (IV), el BIE requiere destreza y maestría. Objetivo: El presente estudio aleatorizado se llevó a cabo para observar la eficacia de la infusión de dexmedetomidina que es menos invasiva y exige menos destreza que el bloqueo del plexo. Metodología: Todos los pacientes programados para cirugía artroscópica electiva de hombro bajo anestesia general, se asignaron o bien al grupo DEX, para recibir un bolo de dexmedetomidina IV de 0,5 mcg/kg en 20 minutos, seguido de una infusión de 0,5 mcg/kg/hora que se detuvo 30 minutos antes del final de la cirugía; o, al grupo BLOQUEO al cual se le administró un BIE ecoguiado con 20ml debupivacaína 0,25%. El desenlace primario evaluado fue la hemodinamia intraoperatoria; los desenlaces secundarios fueron el dolor postoperatorio inmediato, la condición operatoria evaluada por el cirujano, el tiempo de recuperación y la satisfacción del paciente después de 24 horas. Para la evaluación se utilizaron el investigador ciego y puntajes compuestos. Resultados: Ambos grupos mostraron puntajes equivalentes en la hemodinamia intraoperatoria, en tanto que el BIE dio como resultado una mejor analgesia en el postoperatorio (p < 0.001). La opinión del cirujano y el tiempo de recuperación fueron comparables. En general, la experiencia de los pacientes fue satisfactoria con ambas técnicas, de acuerdo con la evaluación de calidad. Conclusiones: La infusión de dexmedetomidina IV es una alternativa efectiva al BIE para cirugías reconstructivas de hombro bajo anestesia general.

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Abstract Objective To investigate the factors that influence the functional results of patients submitted to the Latarjet procedure. Methods Evaluation of 26 patients submitted to surgical treatment following the Latarjet technique due to traumatic recurrent anterior dislocation of the glenohumeral joint, with glenoidal bone loss greater than 20% and/or off-track injury. The minimum follow-up time was of 12 months. The Visual Analogue Scale (VAS), The Western Ontario Shoulder Instability Index (WOSI), and the Subjective Shoulder Value (SSV) scales, as well as objective data from the participants, were evaluated. Results Most patients (84.62%) did not present recurrence of the dislocation, and 92.31% were satisfied. Regarding the functional analysis, the physical component score (PCS) and the mental component score (MCS) found were within the mean quality of life of the population. The physical symptoms, according to the WOSI, presented the best percentage (8.5%), while the worst result was observed regarding lifestyle (20%). On the VAS, pain was classified as moderate (3/10) by 15.38% of the patients (4/26). In relation to sports, patients who practice sports showed improvement in SSV parameters, which had an inverse relationship with the number of relapses. It was also observed that the shorter the time between the first dislocation and the surgery, the greater the patient's satisfaction. Conclusion Early indication of surgical treatment of anterior glenohumeral instability may provide better subjective functional results to the patient.

Resumo Objetivo Investigar os fatores que influenciam os resultados funcionais dos pacientes submetidos ao procedimento de Latarjet. Métodos Avaliação de 26 pacientes submetidos ao tratamento cirúrgico, seguindo a técnica de Latarjet, devido a luxação anterior recidivante traumática da articulação glenoumeral, com perda óssea glenoidal maior do que 20% e/ou lesão off-track. O tempo mínimo de seguimento foi de doze meses. Foram avaliadas as seguintes escalas: Escala Visual Analógica (EVA), The Western Ontario Shoulder Instability Index (WOSI), e Subjective Shoulder Value (SSV), além dos dados objetivos dos participantes. Resultados A maioria dos pacientes (84,62%) não apresentou recidiva de luxação, e 92,31% ficaram satisfeitos. Em relação à análise funcional, a pontuação do componente físico (PCF) e a pontuação do compenente mental (PCM) encontradas estavam dentro da média de qualidade de vida da população. Os sintomas físicos, pela escala WOSI, apresentaram a melhor porcentagem (8,5%), ao passo que o pior resultado foi observado com relação ao estilo de vida (20%). Na EVA, a dor foi classificada como moderada (3/10) por 15,38% dos pacientes (4/26). Em relação aos esportes, os pacientes que praticavam alguma atividade esportiva apresentaram melhora nos parâmetros da escala SSV, que tiveram relação inversa com o número de recidivas. Observou-se ainda que, quanto menor foi o tempo entre a primeira luxação e a realização da cirurgia, maior foi a satisfação do paciente. Conclusão A indicação precoce do tratamento cirúrgico da instabilidade anterior glenoumeral pode proporcionar melhores resultados funcionais subjetivos ao paciente.

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Abstract Interscalene brachial plexus (ISB) block is considered the analgesic technique of choice for shoulder surgery. However, the hemidiaphragmatic paresis that may occur after the block has led to the search for an alternative to the ISB block. In this case report, the pericapsular nerve group (PENG) block was performed for both surgical anesthesia and postoperative analgesia in two patients who underwent shoulder surgery. It is suggested that the PENG block can be safely applied for analgesia and can be part of surgical anesthesia, but alone is not sufficient for anesthesia. The block of this area did not cause motor block or pulmonary complications, nor result in muscle laxity, blocking only the shoulder and the upper third of the humerus. It was demonstrated that the PENG block may be safely applied for both partial anesthesia and analgesia in selected shoulder surgery cases.

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BACKGROUND AND OBJECTIVES: The Beach Chair Position (BCP) has many advantages such as less neurovascular injury and better intra-articular visualization, but it has also negative consequences, including hemodynamic instability. Although maintaining normal Mean Arterial Pressure (MAP) is important, fluid management is also a crucial concept for hemodynamic stability. The main objective of this study is whether preloading before positioning would be effective for less hemodynamic instability. METHODS: This randomized, controlled study was conducted in a single center in the Istanbul University, Istanbul Faculty of Medicine. Forty-nine patients undergoing elective arthroscopic surgery in the BCP were recruited. In the study group, crystalloid fluid at 10...mL.kg-1 of ideal body weight was administered intravenously 30...min before the BCP for preloading. The primary outcome measures were differences of hemodynamic variables as MAP, Stroke Volume (SV), Heart Rate (HR), and Cardiac Output (CO). The secondary outcome measures were Postoperative Nausea and Vomiting (PONV) rates in postoperative first day, surgical satisfaction scale, total ephedrine dose used during surgery, and total amount of fluid. RESULTS: The MAP, CO, and SV measurements of the study group were higher than those of the control group in the 5th minute after the BCP (respectively, p...=...0.001, p...=...0.016, p...=...0.01). The total amount of crystalloid and surgical satisfaction scales were higher in the study group (respectively, p...=...0.016, p...=...0.001). Total amount of colloid and ephedrine dose used in the intraoperative period, and PONV rates were lower in the study group (p...=...0.003, p...=...0.018, p...=...0.019, respectively). CONCLUSION: Consequently, preloading can be favorable approach to preserve hemodynamic stability.

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Interscalene brachial plexus (ISB) block is considered the analgesic technique of choice for shoulder surgery. However, the hemidiaphragmatic paresis that may occur after the block has led to the search for an alternative to the ISB block. In this case report, the pericapsular nerve group (PENG) block was performed for both surgical anesthesia and postoperative analgesia in two patients who underwent shoulder surgery. It is suggested that the PENG block can be safely applied for analgesia and can be part of surgical anesthesia, but alone is not sufficient for anesthesia. The block of this area did not cause motor block or pulmonary complications, nor result in muscle laxity, blocking only the shoulder and the upper third of the humerus. It was demonstrated that the PENG block may be safely applied for both partial anesthesia and analgesia in selected shoulder surgery cases.

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Lesions to the shoulder rotator cuff may have several configurations, and are divided and classified according to the size of the lesion, the tendon involved, its combinations and whether there is possibility of repair. Irreparable subscapular lesions, as well as irreparable anterosuperior lesions, may generate shoulder dysfunction due to loss of humeral head depressants, causing pain and functional limitation. Myotendinous transfers are among the therapeutic alternatives, and the most studied and widespread in recent decades is the transfer of the pectoralis major to the minor tuberosity. However, some anatomical studies suggest that the latissimus dorsi is a more appropriate alternative for the treatment of these lesions because it presents force vectors more similar to those of the subscapularis, besides presenting promising results in the clinical evaluations with short follow-up. The present work aims to describe the surgical technique developed for transfer of the latissimus dorsi in cases of irreparable subscapular and anterossuperior lesions to the rotator cuff.

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OBJECTIVE: To verify whether reverse baseplate positioning without the support of intraoperative three-dimensional technology is within the acceptable parameters in the literature and whether glenoid bone deformity (GBD) compromises this positioning. METHODS: Sixty-nine reverse shoulder arthroplasties were evaluated with volumetric computed tomography (CT). Two radiologists performed blinded CT scan analysis and evaluated baseplate position within 2mm of the inferior glenoid; the inclination and version of the baseplate in relation to the Friedman line; and upper and lower screw and baseplate metallic peg end point positionings. The patients were divided according to the presence of GBD for statistical analyses. RESULTS: The two radiologists concurred reasonably in their interpretations of the following analyzed parameters: baseplate position within 2mm of the inferior glenoid rim (97.1% and 95.7%), baseplate inclination (82.6% and 81.2%), baseplate version (69.6% and 56.5%), the upper screw reaching the base of the coracoid process (71% and 79.7%), the inferior screw remaining inside the scapula (88.4% and 84.1%), and the metallic peg of the baseplate considered intraosseous (88.4% and 72.5%). CONCLUSION: Reverse baseplate positioning without intraoperative three-dimensional technology is within the acceptable parameters of the literature, except for baseplate version and upper screw position. GBD did not interfere with baseplate positioning in reverse shoulder arthroplasty.

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Objective The present paper aims to evaluate the quality of a mobile phone application (app) designed to guide patients after shoulder surgical procedures. Methods A free and easily accessible app was developed to help patients at home. Patients were monitored for app use and adaptation before physical therapy started. At the end of 6 weeks, a qualitative questionnaire was employed to determine the usability of the app. Results In total, 97% of the respondents reported that the app was easy to download, the exercises were readily understood, and they would recommend the app. Ninety-three percent of the participants agreed that the app made them feel a greater degree of participation in the treatment of their illness, while 90% considered the app self-explanatory. Conclusion The virtual platform helps the patients to understand the treatment, aiding the medical prescription of postoperative exercises to be performed at home.

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Abstract Objective The present paper aims to evaluate the quality of a mobile phone application (app) designed to guide patients after shoulder surgical procedures. Methods A free and easily accessible app was developed to help patients at home. Patients were monitored for app use and adaptation before physical therapy started. At the end of 6 weeks, a qualitative questionnaire was employed to determine the usability of the app. Results In total, 97% of the respondents reported that the app was easy to download, the exercises were readily understood, and they would recommend the app. Ninety-three percent of the participants agreed that the app made them feel a greater degree of participation in the treatment of their illness, while 90% considered the app self-explanatory. Conclusion The virtual platform helps the patients to understand the treatment, aiding the medical prescription of postoperative exercises to be performed at home.

Resumo Objetivo Avaliar a qualidade de um aplicativo de celular desenvolvido para orientar pacientes em período pós-operatório de procedimentos cirúrgicos do ombro. Métodos Desenvolveu-se um aplicativo gratuito e de fácil acesso para auxiliar os pacientes em domicílio. Os indivíduos foram monitorados quanto ao uso do aplicativo e adaptação à sua prática antes do início da fisioterapia. Ao final de 6 semanas, aplicou-se um questionário qualitativo para avaliar a usabilidade do aplicativo. Resultados Um total de 97% dos respondentes afirmaram que foi fácil executar o download do aplicativo, que os exercícios sugeridos foram prontamente entendidos, e relataram que indicariam o aplicativo. Noventa e três por cento da amostra concorda que o aplicativo fez com que se sentissem mais participativos com relação ao tratamento de sua doença, enquanto 90% consideraram o aplicativo autoexplicativo. Conclusão O uso de uma plataforma virtual é uma ferramenta de compreensão sobre o tratamento e auxilia na prescrição médica de exercícios pós-operatórios domiciliares.

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Objective To evaluate the functional results of patients submitted to reverse shoulder arthroplasty for the treatment of rotator cuff arthropathy refractory to conservative treatment. Methods A retrospective study of 20 patients (21 shoulders), 17 women (81%) and 3 men (19%), underwent a reverse shoulder arthroplasty between October 2012 and September 2017, for a rotator cuff arthropathy treatment, operated by a single surgeon in a single center. The patients were assessed using the Disabilities of the Arm, Shoulder and Hand (DASH) score, the Short-Form (36) Health Survey (SF-36), the visual analogue scale (VAS) of pain rating, and the University of California - Los Angeles (UCLA) score. The mean age at surgery was of 66 years old (range: 55 to 83 years old). The duration of symptoms before surgery was of ∼ 2.5 years (range: 12 months to 6 years). The mean follow-up was of 42.4 months (range: 19 to 56.7 months). Results The mean postoperative scores were 18.2 points in DASH; 2 points in EVA, of which 16 (77%) corresponded to mild pain, 4 (18%) to moderate pain, and 1 (5%) to severe pain; 29 points in UCLA, of which 6 patients presented a regular result (28%), 10 patients a good result (48%), and 5 patients an excellent result (24%); and 63 points in the SF-36. The complications were four cases of notching, one case of acromial fracture due to stress, and one case of postoperative infection. Conclusions Reverse arthroplasty of the shoulder presents good functional results in the evaluated scores, providing a significant improvement in the quality of life of the patients.

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Abstract Objective To evaluate the functional results of patients submitted to reverse shoulder arthroplasty for the treatment of rotator cuff arthropathy refractory to conservative treatment. Methods A retrospective study of 20 patients (21 shoulders), 17 women (81%) and 3 men (19%), underwent a reverse shoulder arthroplasty between October 2012 and September 2017, for a rotator cuff arthropathy treatment, operated by a single surgeon in a single center. The patients were assessed using the Disabilities of the Arm, Shoulder and Hand (DASH) score, the Short-Form (36) Health Survey (SF-36), the visual analogue scale (VAS) of pain rating, and the University of California - Los Angeles (UCLA) score. The mean age at surgery was of 66 years old (range: 55 to 83 years old). The duration of symptoms before surgery was of ∼ 2.5 years (range: 12 months to 6 years). The mean follow-up was of 42.4 months (range: 19 to 56.7 months). Results The mean postoperative scores were 18.2 points in DASH; 2 points in EVA, of which 16 (77%) corresponded to mild pain, 4 (18%) to moderate pain, and 1 (5%) to severe pain; 29 points in UCLA, of which 6 patients presented a regular result (28%), 10 patients a good result (48%), and 5 patients an excellent result (24%); and 63 points in the SF-36. The complications were four cases of notching, one case of acromial fracture due to stress, and one case of postoperative infection. Conclusions Reverse arthroplasty of the shoulder presents good functional results in the evaluated scores, providing a significant improvement in the quality of life of the patients.

Resumo Objetivo Avaliar os resultados funcionais dos pacientes submetidos a artroplastia reversa de ombro, para tratamento da artropatia do manguito refratária a tratamento conservador. Métodos Estudo retrospectivo de 20 pacientes (21 ombros), 17 mulheres (81%) e 3 homens (19%), submetidos a artroplastia reversa de ombro no período de outubro de 2012 a setembro de 2017, para tratamento de artropatia de manguito rotador, operados por um único cirurgião em um único centro. Os pacientes foram avaliados pelo escore de disfunções do braço, ombro e mão (DASH, na sigla em inglês), pelo questionário genérico de avaliação de qualidade de vida SF-36 (SF-36), pela escala visual analógica de dor (EVA) e pelo escore da Universidade de Los Angeles - Califórnia (UCLA, na sigla em inglês). A média de idade na cirurgia foi de 66 anos (variação de 55 a 83 anos). O tempo de sintomas antes da realização da cirurgia foi de ∼ 2,5 anos (variação de 12 meses a 6 anos). O seguimento médio foi de 42,4 meses (variação de 19 a 56,7 meses). Resultados A média dos escores pós-operatórios foi de 18,2 pontos no DASH; de 2 pontos na EVA, sendo 16 (77%) de dores leves, 4 (18%) de dores moderadas e 1 (5%) de dor intensa; de 29 pontos no UCLA, sendo 6 pacientes com resultado regular (28%), 10 pacientes com resultado bom (48%), e 5 pacientes com resultado excelente (24%); e de 63 pontos no SF-36. Tivemos como complicações quatro casos de notching, um caso de fratura de acrômio por estresse, e um caso de infecção pós-operatória. Conclusões A artroplastia reversa do ombro apresenta bons resultados funcionais nos escores avaliados, propiciando melhora significativa na qualidade de vida dos pacientes.

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Beach chair position is require for Shoulder surgery frequently for proper resolution. The stroke associated with shoulder surgery is a rare complication and probably underreported. The objective of this article is to review the pathophysiology of the ischemic damage associated with beach chair position, learn about strategies and develop recommendations to minimize risks.

La cirugía de hombro (CH), requiere y requerirá colocar a los pacientes en la posición en silla de playa (PSP), cada vez con mayor frecuencia para su adecuada resolución. El asociado a CH, es una complicación poco frecuente y probablmente subreportada. El objetivo de esta revisión, es repasar la fisiopatología del daño isquémico asociado a PSP, conocer estrategias y elaborar recomedaciones destinadas a minimizar riesgos.

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The continuous interscalene block represents the analgesic standard for shoulder surgery. However, the incidence of hemidiaphragmatic paralysis can reach up to 100% of cases. We hypothesized that more dilute local anesthetics would decrease the phrenic palsy at 24 hours. METHODS: Prospective series of patients undergoing arthroscopic shoulder surgery with continuous interscalene block. A 15-ml bolus of lidocaine 1%-levobupivacaine 0.25% plus an infusion of levobupivacaine 0.04% at an 8 mL/h rate plus 5 mL boluses on-demand with a 20-minutes lockout was used until discharge. Hemidiaphragmatic excursion was evaluated with M-mode ultrasound in the subcostal region before blocks, in the post-anesthetic unit, and at 24 h. The primary outcome was the presence of hemidiaphragmatic paralysis at 24 hours. Secondary outcomes included postoperative pain, amount of rescue boluses, postoperative opioids consumption, and side effects. RESULTS: Thirty patients were recruited and analyzed. The incidence of diaphragm paralysis at 24 h was 96.7%. The median [IQR] of pain at rest (patients with shoulder immobilizer) in a NRS from 0 to 10 at 0.5; 1; 3; 6; 12; 24; 48; 72 hours were 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-2]; 0 [0-2.5]; 0 [0-2], respectively. The median [IQR] consumption of LA boluses was 1.5 [0-7]. There were no postoperative morphine requirements. The most frequent side effect was Horner´s syndrome. CONCLUSIONS: Continuous interscalene block with 0.04% levobupivacaine provides adequate analgesia for arthroscopic shoulder surgery but does not prevent hemidiaphragmatic paralysis at 24 hours under the conditions of this study.

El bloqueo interescalénico representa el estándar analgésico para cirugía de hombro. No obstante, la incidencia de parálisis hemidiafragmática puede alcanzar 100% de los casos. Nuestra hipótesis es que infusiones con anestésicos locales más diluidos disminuirían la PHD 24 horas postbloqueo. MÉTODOS: Serie prospectiva de pacientes sometidos a cirugía artroscópica electiva de hombro con bloqueo interescalénico continuo. Un bolo de 15 mL de lidocaína 1%-levobupivacaína 0,5% más infusión postoperatoria de levobupivacaína al 0,04% a 8 ml/h más bolos a demanda de 5 mL con intervalo de 20 minutos hasta el alta. La excursión hemidiafragmática se evaluó con ultrasonido con transductor curvo 2-5 MHz en modo M en la región infracostal antes del bloqueo, en la unidad postanestésica y a las 24 h, antes del alta. El outcome primario fue la presencia de parálisis hemidiafragmática 24 horas postbloqueo. Los resultados secundarios incluyeron dolor postoperatorio, total de bolos de rescate, requerimiento de opioides postoperatorios y efectos secundarios. RESULTADOS: Treinta pacientes fueron reclutados y analizados. La incidencia de PHD a las 24 h fue 96,7%. La mediana [RIC] de dolor en reposo (pacientes con inmovilizador de hombro) medido en escala numérica de 0 a 10, a las 0,5; 1; 3; 6; 12; 24; 48; 72 horas fueron 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-0]; 0 [0-2]; 0 [0-2.5]; 0 [0-2] respectivamente. La mediana [RIC] de consumo de bolos de rescate fue 1,5 [0-7]. No hubo pacientes con requerimientos de morfina postoperatoria. El efecto colateral más frecuente fue el síndrome de Horner. CONCLUSIONES: El bloqueo interescalénico continuo con levobupivacaína 0,04% proporciona analgesia postoperatoria adecuada, pero no evita la PHD a las 24 h en las condiciones de esta serie.

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OBJECTIVE: To evaluate whether body mass index (BMI) 30 can be used as a cut-off point in decisions about whether or not to perform long head biceps (LHB) tenodesis, leading to a low rate of esthetic complaints, and to compare two tenodesis techniques. METHODS: Ninety-six patients underwent shoulder arthroscopy where tenotomy was performed separately in patients with a BMI ≥30 and was followed by tenodesis when BMI <30. The patients were assessed on the basis of their personal perception of the deformity and by 3 independent observers. RESULTS: The patient's perception of esthetic deformity in the arm was 15.6%. In the tenotomy group (12.5%) and in the tenodesis group (17.9%) - (p = 0.476). Patients with rocambole-like tenodesis perceived the deformity in 13.2% of cases, while patients with anchor tenodesis noticed the deformity 27.8% (p = 0.263) of the time. There was no statistical difference in the perception of deformity among the independent examiners. CONCLUSION: BMI 30 can be used as a cut-off point in decisions about whether or not to perform LHB tenodesis, leading to low rates of esthetic complaint by patients (12.5%). The rocambole-like tenodesis technique appears to be more able to avoid esthetic deformity of the arm after the LHB tenotomy according to the patients' observations. Level of evidence II, Prospective comparative study.

OBJETIVO: Avaliar se índice de massa corporal (IMC) 30 pode ser utilizado como ponto de corte nas decisões sobre realizar ou não a tenodese da cabeça longa do bíceps (CLB), levando a um baixo índice de queixa estética, e comparar duas técnicas de tenodese. MÉTODOS: Foram submetidos à cirurgia artroscópica no ombro 96 pacientes, sendo a tenotomia realizada de forma isolada nos pacientes com IMC ≥ 30 e seguida de tenodese quando IMC < 30. Os pacientes foram avaliados por sua percepção pessoal da deformidade e por três observadores independentes. RESULTADOS: A percepção da deformidade estética no braço pelo paciente foi de 15,6%. No grupo tenotomia (12,5%) e no grupo tenodese (17,9%) - (p=0,476). Pacientes com tenodese rocambole perceberam a deformidade em 13,2% dos casos, enquanto os pacientes com tenodese em âncora a notaram em 27,8% das vezes (p=0,263). Não houve diferença estatística para a percepção da deformidade entre os examinadores independentes. CONCLUSÃO: IMC 30 pode ser usado como ponto de corte nas decisões sobre realizar ou não a tenodese da CLB, levando a baixos índices de queixa estética por parte dos pacientes (12,5%). A técnica de tenodese tipo rocambole parece ter mais capacidade de evitar a deformidade estética do braço após a tenotomia da CLB, conforme a observação dos pacientes (13,2%). Nível de evidência II, estudo prospectivo comparativo.

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INTRODUCCIÓN: la lesión de los vasos subclavios durante la cirugía de clavícula es una situación rara, de suceder podría resultar incluso mortal; conocer su ubicación es indispensable para minimizar ese riesgo.OBJETIVO: determinar la ubicación y la distancia de la AS y VS respecto a la clavícula. Secundariamente, identificar las características particulares que influencien la ubicación y la distancia. MATERIALES Y MÉTODO: estudio retrospectivo, AngioTAC de tórax y cuello entre 2012 y 2017; se midió la longitud de la clavícula, distancia y dirección de los vasos subclavios en cada tercio de la clavícula, como también la angulación entre una horizontal y el centro de los vasos subclavios. Resultados: 39 AngioTC, 78 hombros. Distancia AS/clavícula tercio proximal, medio y distal 32,8mm (20,3-46,3), 15,4mm (6,8-28,0) y 62,7mm (37,0-115,4) respectivamente. La distancia VS/clavícula tercio proximal, medio y distal fue: 7,4mm (1,0-19,2), 16,2mm (6,7-34,7) y 67,1mm (29,7-117,0) respectivamente. La ubicación de AS y VS con respecto a la clavícula es posterosuperior en el tercio proximal, posteroinferior en el tercio medio e inferior en el tercio distal. CONCLUSIÓN: En el tercio proximal la vena puede estar solo a 1mm de la clavícula y la arteria a 6mm en dirección antero-posterior, resultando esa zona la más peligrosa. En el tercio medio la distancia es mayor, pudiendo estar arteria y vena a solo 6mm, la dirección de brocado más peligrosa es antero-inferior con una inclinación promedio de 45° caudal. El tercio distal es el más seguro, los vasos están al menos a 30mm de distancia hacia caudal. Nivel de evidencia III.

BACKGROUND: injury to the subclavian vessels during clavicle surgery is a rare situation, if it happens it could even be fatal; knowing their location is essential to minimize that risk. OBJECTIVE: determine location and distance of the AS and VS with respect to the clavicle. Secondarily identify particular characteristics that influence location and distance. MATERIAL AND METHODS: retrospective study, AngioTAC of thorax and neck between 2012 and 2017; it was measured the length of the clavicle, distance and direction of the subclavian vessels in each third of the clavicle and angulation between a horizontal and the center of the subclavian vessels were measured. Results: 39 AngioTC, 78 shoulders. AS / clavicle third proximal, middle and distal distance 32.8mm (20.3-46.3), 15.4mm (6.8-28.0) and 62.7mm (37.0-115.4) respectively. Distance VS / clavicle third proximal, middle and distal was: 7.4mm (1.0-19.2), 16.2mm (6.7-34.7) and 67.1mm (29.7-117.0) respectively. The location of AS and VS with respect to the clavicle is posterosuperior in the proximal third, posteroinferior in the middle third and inferior in the distal third. CONCLUSION: In the proximal third the vein can be only 1mm from the clavicle and the artery to 6mm in the anterior-posterior direction, this zone is the most dangerous. In the middle third the distance is greater, artery and vein can be only to 6mm, the most dangerous drilling direction is antero-inferior with an average inclination of 45° caudal. The distal third is the safest, the vessels are at least 30mm away from the vessels. Level of evidence III.

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ABSTRACT Objective: To evaluate whether body mass index (BMI) 30 can be used as a cut-off point in decisions about whether or not to perform long head biceps (LHB) tenodesis, leading to a low rate of esthetic complaints, and to compare two tenodesis techniques. Methods: Ninety-six patients underwent shoulder arthroscopy where tenotomy was performed separately in patients with a BMI ≥30 and was followed by tenodesis when BMI <30. The patients were assessed on the basis of their personal perception of the deformity and by 3 independent observers. Results: The patient's perception of esthetic deformity in the arm was 15.6%. In the tenotomy group (12.5%) and in the tenodesis group (17.9%) - (p = 0.476). Patients with rocambole-like tenodesis perceived the deformity in 13.2% of cases, while patients with anchor tenodesis noticed the deformity 27.8% (p = 0.263) of the time. There was no statistical difference in the perception of deformity among the independent examiners. Conclusion: BMI 30 can be used as a cut-off point in decisions about whether or not to perform LHB tenodesis, leading to low rates of esthetic complaint by patients (12.5%). The rocambole-like tenodesis technique appears to be more able to avoid esthetic deformity of the arm after the LHB tenotomy according to the patients' observations. Level of evidence II, Prospective comparative study.

RESUMO Objetivo: Avaliar se índice de massa corporal (IMC) 30 pode ser utilizado como ponto de corte nas decisões sobre realizar ou não a tenodese da cabeça longa do bíceps (CLB), levando a um baixo índice de queixa estética, e comparar duas técnicas de tenodese. Métodos: Foram submetidos à cirurgia artroscópica no ombro 96 pacientes, sendo a tenotomia realizada de forma isolada nos pacientes com IMC ≥ 30 e seguida de tenodese quando IMC < 30. Os pacientes foram avaliados por sua percepção pessoal da deformidade e por três observadores independentes. Resultados: A percepção da deformidade estética no braço pelo paciente foi de 15,6%. No grupo tenotomia (12,5%) e no grupo tenodese (17,9%) - (p=0,476). Pacientes com tenodese rocambole perceberam a deformidade em 13,2% dos casos, enquanto os pacientes com tenodese em âncora a notaram em 27,8% das vezes (p=0,263). Não houve diferença estatística para a percepção da deformidade entre os examinadores independentes. Conclusão: IMC 30 pode ser usado como ponto de corte nas decisões sobre realizar ou não a tenodese da CLB, levando a baixos índices de queixa estética por parte dos pacientes (12,5%). A técnica de tenodese tipo rocambole parece ter mais capacidade de evitar a deformidade estética do braço após a tenotomia da CLB, conforme a observação dos pacientes (13,2%). Nível de evidência II, estudo prospectivo comparativo.

RESUMO

BACKGROUND: Shoulder surgery in beach chair position is a very common procedure in our daily practice. It has been associated to regional cerebral saturation impairment detected by near-infrared spectroscopy (NIRS) under general anaesthesia. Severe neurological complications were previously reported, even in previously healthy patients. An anaesthetic protocol under regional anaesthesia and biespectral index (BIS) guided sedation seems to be a safer strategy in order to prevent complications. OBJECTIVE: To find out, in a group of patients undergoing shoulder surgery in beach chair position under regional anaesthesia and sedation, the prevalence of cerebral desaturation events detected by NIRS (defined as a decrease ≥ 20% from baseline or absolute value < 55%). MATERIAL AND METHOD: In this descriptive study, 30 patients undergoing shoulder surgery in beach chair position under regional anaesthesia (ultrasound guided interescalene brachial plexus block) and propofol infusion BIS guided sedation were enrolled to assess the prevalence of cerebral desaturation events. The baseline data for regional cerebral oxygen saturation and bispectral index and non invasive blood pressure measured at heart level were taken prior to surgery after beach chair positioning and thereafter all 5 min until discharge. RESULTS: No cerebral desaturation events were detected during this study. CONCLUSIONS: Although monitoring regional cerebral saturation with NIRS detects decreased cerebral perfusion allowing a rapid intervention, we consider it is not essential under this anaesthesia regimen, considering that no cerebral desaturation events were reported.

La cirugía de hombro en posición de sentado constituye un procedimiento frecuente en la práctica diaria. Bajo anestesia general, se ha asociado con caída de la saturación regional cerebral de oxígeno (Src02) detectada por espectrospcopia infraroja (NIRS), reportándose complicaciones neurológicas severas, incluso en pacientes previamente sanos. El empleo de una técnica de anestesia regional más sedación titulada con índice biespectral (BIS) parecería ser una estrategia más segura a fin de evitar dichos eventos. OBJETIVO: Conocer, en pacientes sometidos a artroscopia de hombro en posición de sentado bajo anestesia regional más sedación, la prevalencia de episodios de desaturación cerebral (ECDs) determinada por NIRS (SrcO2 inferior a 55% o disminución del 20% respecto al basal). MATERIAL Y MÉTODO: Se realizó un estudio descriptivo en 30 pacientes sometidos a artroscopía de hombro en posición de sentado bajo anestesia regional (bloqueo interescalénico ecoguiado) más sedación titulada (infusión de propofol guiada por BIS). Se tomaron valores de referencia de Src02, BIS y presión no invasiva a nivel del corazón luego del posicionamiento y, consecutivamente en forma continua para las primeras dos variables y cada 5 minutos hasta el final para la última. Se ocultaron a los anestesiólogos los valores de Src02. RESULTADOS: No se ha detectado ningún EDC en la población estudiada. CONCLUSIÓN: Consideramos que el monitoreo de la perfusión cerebral con tecnología NIRS resulta útil aunque no imprescindible bajo este protocolo anestésico, dada la incidencia casi nula de eventos.

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