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Background: Clavicle fractures are among the most common upper limb fractures in adults, with the midshaft region being the most frequently affected site. Minimally invasive plate osteosynthesis (MIPO) has emerged as an alternative to the traditional open reduction and internal fixation (ORIF) technique, offering potential advantages. The purpose of this study was to conduct a systematic review to explore the results of this technique in the existing literature, with emphasis on the occurrence of surgical complications and functional outcomes and also to provide a comprehensive comparison of MIPO and ORIF in the management of midshaft clavicle fractures. Methods: We conducted a systematic review to evaluate the complication incidence and clinical outcomes of MIPO for midshaft clavicle fractures. We searched PubMed/Medical Literature Analysis and Retrieval System Online (MEDLINE), Scopus, the Cochrane Database of Controlled Trials, and the Cochrane Database of Systematic Reviews databases without language or date restrictions. Studies focusing on midshaft clavicle fractures treated with MIPO were included, while other clavicle fractures and nonclinical studies were excluded. The risk of bias was assessed using the Methodological Index for Nonrandomized Studies criteria and the Risk of Bias Tool 2 Cochrane tool. Data synthesis included qualitative analysis, and if applicable, quantitative analysis and meta-analysis. Adherence to Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines ensured reporting quality. Results: A total of 107 studies were initially identified, after applying inclusion and exclusion criteria, 22 studies were included for data extraction. These studies involved the evaluation of 714 clavicles treated with the MIPO technique. Of the 714 MIPO cases, 11 cases of implant failure, 5 nonunions, 2 infections, and 28 cases with neurological impairment were observed. Quantitative analysis comparing MIPO with ORIF revealed that MIPO had significantly shorter surgery time (mean difference -12.95, 95% confidence interval [-25.27 to -0.63], P = .04) and lower occurrence of numbness (odds ratio 0.29, 95% CI [0.15-0.56], P = .0002) compared to ORIF. Time to bone union, functional outcomes, and other complications were similar between MIPO and ORIF at the final follow-up. An overall moderate risk of bias was found across the studies. Conclusion: The MIPO technique yields good and comparable results to ORIF for midshaft clavicle fractures. Additionally, the MIPO technique may offer advantages such as reduced surgical time and lower chances of neurological impairment.

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Introducción: Las fracturas humerales diafisarias multifragmentarias con extensión proximal son patrones infrecuentes de lesión causados principalmente por trauma de alta energía. La forma anatómica del húmero, la presencia de la tuberosidad deltoidea y la proximidad del nervio radial al surco radial representan retos a tratar, por ello se recomiendan incisiones mínimamente invasivas y la estabilización de la fractura con placa proximal humeral internal locking system. Objetivo: Demostrar la eficacia de la técnica minimally invasive plate osteosynthesis con el moldeamiento helicoidal de la placa proximal humeral internal locking system. Presentación del caso: Paciente de 29 años que sufrió accidente de tránsito y presentó fractura diafisaria multifragmentaria extendida al húmero proximal. Se trató con la técnica minimally invasive plate osteosynthesis y placa helicoidal proximal humeral internal locking system. Alcanzó la consolidación completa y rápida recuperación funcional. Conclusiones: La técnica minimally invasive plate osteosynthesis con placa helicoidal proximal humeral internal locking system es una opción quirúrgica eficaz y segura para las fracturas humerales diafisarias multifragmentarias con extensión proximal, ya que preserva la inserción muscular deltoidea, mejora el contacto placa hueso con riesgo mínimo de lesión neurológica axilar y radial, favorece la curación ósea y mejora el resultado funcional.

Introduction: Multifragmentary diaphyseal humeral fractures with proximal extension are infrequent patterns of injury caused mainly by high-energy trauma. The anatomical shape of the humerus, the presence of the deltoid tuberosity and the proximity of the radial nerve to the radial groove represent challenges to be treated, therefore minimally invasive incisions and fracture stabilization with the proximal humeral internal locking system plate are recommended. Objective: To establish the efficacy of the minimally invasive plate osteosynthesis technique with helical molding of the proximal humeral plate internal locking system. Case report: We report the case of a 29-year-old patient who suffered a traffic accident and had a multifragmentary diaphyseal fracture extended to the proximal humerus. He was treated with the minimally invasive plate osteosynthesis technique and the humeral proximal helical plate internal locking system. He achieved complete consolidation and rapid functional recovery. Conclusions: The minimally invasive plate osteosynthesis technique with the humeral proximal helical plate internal locking system is an effective and safe surgical option for multifragmentary diaphyseal humeral fractures with proximal extension, since it preserves the deltoid muscle insertion, improves bone-plate contact with minimal risk of fracture. Axillary and radial neurological injury, promotes bone healing and improves functional outcome.

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PURPOSE: The objective of this study is to evaluate the effect of absolute stability (AS) versus relative stability (RS) performed through a minimally invasive plate osteosynthesis (MIPO) in AO/OTA 12A1 and 12A2 fractures on healing and the time to radiographic union. METHODS: This was a retrospective cohort study of all patients treated with plate fixation for AO/OTA type 12A1-A2 fractures at a single institution. Patients were grouped according to the type of stability used in their surgery. Time until radiographic union was estimated using the Kaplan-Meier method, which was compared by long-rank test between both types of surgical techniques. RESULTS: A total of 70 patients were included in this study with 35 patients in each group. The median follow-up was 9 (IQR 6-14) months. The median time to radiographic union was significantly lower in the AS group than in the RS group: 12 (interquartile range (IQR) 10-14) weeks versus 18 (IQR 16-19) weeks, respectively (p < 0.001). Non-union was seen in two cases (7%) in the relative stability group. Three patients in the RS group developed a post-operative radial nerve palsy. CONCLUSION: The main finding of this study is that the median time to radiographic union was significantly shorter in the patients treated with AS compared to those with a RS technique. These findings support the recommendations of the AO foundation in that simple metaphyseal fractures (type A) that require surgical treatment should be treated with an AS construct. RS techniques should be reserved to multifragmentary fractures where fragment preservation of blood supply is paramount.

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BACKGROUND: The purpose of this study was to identify nerves at risk when using a minimally invasive plate osteosynthesis precontoured long proximal humerus locking plate and to evaluate the risk of injury to deltoid insertion and brachialis muscle. METHODS: Ten cadaveric upper limb specimens were used. A transdeltoid anterolateral approach was performed proximally and a second anterior approach was performed distally. A 14-hole "low" long precountored ALPS locking plate (Biomet Trauma; Zimmer Biomet, Warsaw, IN, USA) was used. Subsequently, anatomic dissection to measure the anatomic relationship of the plate with the deltoid insertion, with the brachialis muscle, and with the axillary, radial, and musculocutaneous nerves was performed. RESULTS: The mean humeral length was 302 mm (standard deviation 52.3, 99% confidence interval: 259.3-344.6). In 6 specimens, the axillary nerve was located at the level of the third row of holes of the plate; in 3 specimens, at the level of the fourth row; and in one specimen, at the level of the second row. The distance between the plate and the musculocutaneous nerve was on average 10.2 mm (standard deviation 4, 99% confidence interval: 6.9-13.5) and between the plate and the radial nerve was on average 7.9 mm (standard deviation 4.7, 99% confidence interval: 4-11.8). The plate pierced the anterior distal fibers of the deltoid in all specimens. In 8 specimens, no brachialis muscle fibers were located under the plate. CONCLUSIONS: The use of the long precontoured 14-hole ALPS locking plate with the minimally invasive plate osteosynthesis technique, previously identifying the axillary and musculocutaneous nerves, is feasible; however, the distances between the plate and the nerves remain low, so caution should be maintained. Despite the curved design of the plate, the deltoid insertion is partially compromised in all cases.

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This study assessed radiographically changes in tibial alignment in the frontal and sagittal planes in dogs that underwent minimally invasive plate osteosynthesis (MIPO) without the aid of image intensifiers. Radiographs of dogs with complete non-articular tibial fractures submitted to MIPO were included and evaluated, without the aid of a transoperative image intensifier and / or an association of implants. The tibial mechanical angles (mMPTA, mMDTA, mCaPTA and mCrDTA) were measured by three evaluators. The data obtained were compared with results from previously published studies. Twenty-seven animals were included in the study. The mean and standard deviation of the angular changes were as follows: mMPTA, 2.54° ± 3.10 (-1.1º to 8.7º); mMDTA, 0.03º ± 0.16 (-3.44º to 0.79º); mCaPTA, 37º ± 4.29 (-6.23º to 14.87º); and mCrDTA, 8.25° ± 5.53 (-0.2º to 17.28º). There was a negative correlation between “mCaPTA” and “mCrDTA”. MIPO of the tibia without using image intensifiers and implant association can potentially cause angular changes, which can lead to clinically relevant deformities after bone healing.(AU)

Este estudo teve como objetivo avaliar radiograficamente as alterações no alinhamento da tíbia nos planos frontal e sagital em cães submetidos à osteossíntese minimamente invasiva com placa (MIPO) sem o auxílio de intensificadores de imagem. Foram incluídas e avaliadas radiografias de cães com fraturas completas da tíbia não articulares submetidos a MIPO, sem o auxílio de intensificador de imagem transoperatório e/ou associação de implantes. Os ângulos mecânicos tibiais (mMPTA, mMDTA, mCaPTA e mCrDTA) foram mensurados por três avaliadores. Os dados obtidos pela média de todas as avaliações foram comparados com resultados de estudos previamente publicados. Vinte e sete animais foram incluídos no estudo. A média e desvio padrão das alterações angulares foram os seguintes: mMPTA= 2,54° ± 3,10 (-1,1º a 8,7º); mMDTA= 0,03º ± 0,16 (-3,44º a 0,79º); mCaPTA= 37º ± 4,29 (-6,23º a 14,87º); e mCrDTA= 8,25° ± 5,53 (-0,2º a 17,28º). Houve uma correlação negativa entre “mCaPTA” e “mCrDTA”. A realização de MIPO em tíbia sem o uso de intensificadores de imagem e associação de implantes pode causar alterações angulares, o que pode levar a deformidades clinicamente relevantes após a cicatrização óssea.(AU)

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Purpose To evaluate clinical outcome following minimally invasive plate osteosynthesis (MIPO) associated with percutaneous transplantation of allogeneic adipose-derived mesenchymal stem cells (AD-MSC) at the tibial fracture site in dogs. Methods Thirty-six dogs presenting with nonarticular complete tibial fracture were included in this study. All fractures were treated by the same MIPO technique. The animals were divided in group 1 (n = 20) received a percutaneous application of 3 × 106 AD-MSC at the fracture site and group 2 (n = 16) did not receive any adjuvant treatment. Postoperative radiographic examinations were made at 15, 30, 60, 90 and 120 days. Results Fifty-eight percent of the patients were classified as skeletally immature. The median weight of the animals was 18.8 kg. The mean radiographic union time differed statistically between the AD-MSC group (28.5 days) and the control group (70.3 days). Sixty percent of dogs in group 1 and 56.25% of the group 2 were considered immature. Conclusions The use of allogeneic AD-MSC cell therapy and MIPO is a safe, viable and effective technique for promoting bone healing in nonarticular tibial fractures in dogs.(AU)

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This study assessed radiographically changes in tibial alignment in the frontal and sagittal planes in dogs that underwent minimally invasive plate osteosynthesis (MIPO) without the aid of image intensifiers. Radiographs of dogs with complete non-articular tibial fractures submitted to MIPO were included and evaluated, without the aid of a transoperative image intensifier and / or an association of implants. The tibial mechanical angles (mMPTA, mMDTA, mCaPTA and mCrDTA) were measured by three evaluators. The data obtained were compared with results from previously published studies. Twenty-seven animals were included in the study. The mean and standard deviation of the angular changes were as follows: mMPTA, 2.54° ± 3.10 (-1.1º to 8.7º); mMDTA, 0.03º ± 0.16 (-3.44º to 0.79º); mCaPTA, 37º ± 4.29 (-6.23º to 14.87º); and mCrDTA, 8.25° ± 5.53 (-0.2º to 17.28º). There was a negative correlation between “mCaPTA” and “mCrDTA”. MIPO of the tibia without using image intensifiers and implant association can potentially cause angular changes, which can lead to clinically relevant deformities after bone healing.

Este estudo teve como objetivo avaliar radiograficamente as alterações no alinhamento da tíbia nos planos frontal e sagital em cães submetidos à osteossíntese minimamente invasiva com placa (MIPO) sem o auxílio de intensificadores de imagem. Foram incluídas e avaliadas radiografias de cães com fraturas completas da tíbia não articulares submetidos a MIPO, sem o auxílio de intensificador de imagem transoperatório e/ou associação de implantes. Os ângulos mecânicos tibiais (mMPTA, mMDTA, mCaPTA e mCrDTA) foram mensurados por três avaliadores. Os dados obtidos pela média de todas as avaliações foram comparados com resultados de estudos previamente publicados. Vinte e sete animais foram incluídos no estudo. A média e desvio padrão das alterações angulares foram os seguintes: mMPTA= 2,54° ± 3,10 (-1,1º a 8,7º); mMDTA= 0,03º ± 0,16 (-3,44º a 0,79º); mCaPTA= 37º ± 4,29 (-6,23º a 14,87º); e mCrDTA= 8,25° ± 5,53 (-0,2º a 17,28º). Houve uma correlação negativa entre “mCaPTA” e “mCrDTA”. A realização de MIPO em tíbia sem o uso de intensificadores de imagem e associação de implantes pode causar alterações angulares, o que pode levar a deformidades clinicamente relevantes após a cicatrização óssea.

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ABSTRACT: This study assessed radiographically changes in tibial alignment in the frontal and sagittal planes in dogs that underwent minimally invasive plate osteosynthesis (MIPO) without the aid of image intensifiers. Radiographs of dogs with complete non-articular tibial fractures submitted to MIPO were included and evaluated, without the aid of a transoperative image intensifier and / or an association of implants. The tibial mechanical angles (mMPTA, mMDTA, mCaPTA and mCrDTA) were measured by three evaluators. The data obtained were compared with results from previously published studies. Twenty-seven animals were included in the study. The mean and standard deviation of the angular changes were as follows: mMPTA, 2.54° ± 3.10 (-1.1º to 8.7º); mMDTA, 0.03º ± 0.16 (-3.44º to 0.79º); mCaPTA, 37º ± 4.29 (-6.23º to 14.87º); and mCrDTA, 8.25° ± 5.53 (-0.2º to 17.28º). There was a negative correlation between "mCaPTA" and "mCrDTA". MIPO of the tibia without using image intensifiers and implant association can potentially cause angular changes, which can lead to clinically relevant deformities after bone healing.

RESUMO: Este estudo teve como objetivo avaliar radiograficamente as alterações no alinhamento da tíbia nos planos frontal e sagital em cães submetidos à osteossíntese minimamente invasiva com placa (MIPO) sem o auxílio de intensificadores de imagem. Foram incluídas e avaliadas radiografias de cães com fraturas completas da tíbia não articulares submetidos a MIPO, sem o auxílio de intensificador de imagem transoperatório e/ou associação de implantes. Os ângulos mecânicos tibiais (mMPTA, mMDTA, mCaPTA e mCrDTA) foram mensurados por três avaliadores. Os dados obtidos pela média de todas as avaliações foram comparados com resultados de estudos previamente publicados. Vinte e sete animais foram incluídos no estudo. A média e desvio padrão das alterações angulares foram os seguintes: mMPTA= 2,54° ± 3,10 (-1,1º a 8,7º); mMDTA= 0,03º ± 0,16 (-3,44º a 0,79º); mCaPTA= 37º ± 4,29 (-6,23º a 14,87º); e mCrDTA= 8,25 ° ± 5,53 (-0,2º a 17,28º). Houve uma correlação negativa entre "mCaPTA" e "mCrDTA". A realização de MIPO em tíbia sem o uso de intensificadores de imagem e associação de implantes pode causar alterações angulares, o que pode levar a deformidades clinicamente relevantes após a cicatrização óssea.

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ABSTRACT Purpose To evaluate clinical outcome following minimally invasive plate osteosynthesis (MIPO) associated with percutaneous transplantation of allogeneic adipose-derived mesenchymal stem cells (AD-MSC) at the tibial fracture site in dogs. Methods Thirty-six dogs presenting with nonarticular complete tibial fracture were included in this study. All fractures were treated by the same MIPO technique. The animals were divided in group 1 (n = 20) received a percutaneous application of 3 × 106 AD-MSC at the fracture site and group 2 (n = 16) did not receive any adjuvant treatment. Postoperative radiographic examinations were made at 15, 30, 60, 90 and 120 days. Results Fifty-eight percent of the patients were classified as skeletally immature. The median weight of the animals was 18.8 kg. The mean radiographic union time differed statistically between the AD-MSC group (28.5 days) and the control group (70.3 days). Sixty percent of dogs in group 1 and 56.25% of the group 2 were considered immature. Conclusions The use of allogeneic AD-MSC cell therapy and MIPO is a safe, viable and effective technique for promoting bone healing in nonarticular tibial fractures in dogs.

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PURPOSE: The main objective of this study was to evaluate the Quick-Disabilities of the Arm, Shoulder and Hand Score (DASH) score as the main early (90 days) outcome in a prospective multicenter observational Latin American study on isolated humeral shaft fractures. METHODS: From December 2015 to April 2017, in six Latin American countries, patients 18 years or older with a closed, isolated nonpathological 12A, 12B, or 12C AO/OTA (Arbeitsgemeinschaft für Osteosynthesefragen/Orthopaedic Trauma Association) fractures were included. The 90 (±10)-day Quick-DASH score was used to compare the results of the different treatments. The secondary outcomes were patient treatment satisfaction, shoulder and elbow range of motion, and radiographic evaluation. RESULTS: A total of 92 patients successfully completed the Quick-DASH questionnaire. Surgical treatments resulted in better outcomes than nonsurgical treatment, but only minimally invasive plate osteosynthesis produced significantly lower Quick-DASH scores than nonsurgical treatment (p < 0.05). There were strong correlations between patient self-evaluation and the Quick-DASH score (p < 0.0005) but not between the Quick-DASH score and radiographic fracture healing. No significant difference was found between the treatments regarding the rate of return to work, but the medical center had a significant influence on treatment choice (p < 0.0005). CONCLUSION: The high correlation between Quick-DASH score and patient satisfaction and functional outcome indicates that the Quick-DASH questionnaire is a suitable tool for evaluating adult humeral shaft fracture outcomes. Patients with a Quick-DASH score below 15 could be considered recovered, and patients with a Quick-DASH score above 40 could be considered not yet recovered. Quick-DASH scores were not significantly associated with radiographic fracture healing.

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A técnica de Osteossíntese Minimamente Invasiva (MIPO) ainda não é difundida em medicina veterinária.Tendo em vista que as fraturas de ossos longos são frequentemente atendidas na rotina clínica cirúrgica veterinária, o médico veterinário deve ter pleno conhecimento sobre as técnicas de osteossíntese disponíveis; dentre as mais comuns, destacam-se as placas metálicas, pinos intramedulares, fios de cerclagem, fixadores externos e hastes bloqueadas. Na MIPO busca-se a mínima manipulação do foco de fratura, preservando o suprimento vascular, permitindo melhor e mais rápida consolidação óssea. Assim, esta revisão tem por objetivo descrever alguns métodos de osteossíntese, especialmente a MIPO.

The technique of osteosynthesis Minimally Invasive (MIPO) is not widespread in veterinary medicine. Given that the long bone fractures are often treated at veterinary surgical clinic routine, the veterinarian must have full knowledge about the osteosynthesis techniques available; among the most common have metal plates, intramedullary pin, cerclage wires, external fixators and interlocking nails. On the MIPO technique follows the which seeks to minimal manipulation of the fracture core, preserving the vascular supply, enabling better and faster bone healing. Therefore, this review aims to describe some concepts on the consolidation of fractures, internal fixation methods, especially the MIPO.

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A técnica de Osteossíntese Minimamente Invasiva (MIPO) ainda não é difundida em medicina veterinária.Tendo em vista que as fraturas de ossos longos são frequentemente atendidas na rotina clínica cirúrgica veterinária, o médico veterinário deve ter pleno conhecimento sobre as técnicas de osteossíntese disponíveis; dentre as mais comuns, destacam-se as placas metálicas, pinos intramedulares, fios de cerclagem, fixadores externos e hastes bloqueadas. Na MIPO busca-se a mínima manipulação do foco de fratura, preservando o suprimento vascular, permitindo melhor e mais rápida consolidação óssea. Assim, esta revisão tem por objetivo descrever alguns métodos de osteossíntese, especialmente a MIPO.(AU)

The technique of osteosynthesis Minimally Invasive (MIPO) is not widespread in veterinary medicine. Given that the long bone fractures are often treated at veterinary surgical clinic routine, the veterinarian must have full knowledge about the osteosynthesis techniques available; among the most common have metal plates, intramedullary pin, cerclage wires, external fixators and interlocking nails. On the MIPO technique follows the which seeks to minimal manipulation of the fracture core, preserving the vascular supply, enabling better and faster bone healing. Therefore, this review aims to describe some concepts on the consolidation of fractures, internal fixation methods, especially the MIPO.(AU)

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Introducción: Las fracturas mediodiafisarias de clavícula representan hasta el 10% de las fracturas del esqueleto. El tratamiento conservador brinda buenos resultados con baja incidencia de complicaciones. Sin embargo, en trazos desplazados, multifragmentarios o con deformidad significativa, se debe considerar la cirugía. El propósito de esta serie retrospectiva es exponer nuestra experiencia en el tratamiento de fracturas cerradas, desplazadas y mediodiafisarias de clavícula con placas precontorneadas mediante la técnica MIPO, describir la técnica y los resultados funcionales preliminares. Materiales y Métodos: Serie retrospectiva de 13 pacientes (11 varones [84,6%] y 2 mujeres [15,4%]), media de la edad: 31 años, con fracturas diafisarias cerradas desplazadas de clavícula de tipo 2B de Robinson (Edimburgo), tratadas mediante reducción y osteosíntesis con placas precontorneadas con MIPO, entre abril de 2010 y noviembre de 2013. Seguimiento promedio: 13 meses (rango 11-25). Se realizaron controles radiográficos y tomografías computarizadas, valorando la funcionalidad mediante las escalas de Constant-Murley modificada, QuickDASH y el dolor con la escala analógica visual. Resultados: El tiempo promedio hasta la cirugía fue de 8 días; la cirugía duró 35 minutos y el tiempo de internación posoperatoria fue de 1.28 días. La consolidación clínico-radiológica se registró en una media de 15.2 semanas. El puntaje promedio de Constant-Murley modificado fue 88; el de QuickDASH, 26,9 y la escala analógica visual arrojó un valor de 0,3. No hubo complicaciones sistémicas ni cosméticas. Conclusión: La osteosíntesis mínimamente invasiva en fracturas cerradas mediodiafisarias desplazadas de clavícula representó una técnica reproducible con un tiempo quirúrgico reducido y puntajes funcionales aceptables, sin complicaciones de relevancia. Nivel de Evidencia: IV

Introduction: Midshaft clavicular fractures represent up to 10% of skeleton fractures. Conservative treatment usually provides good results with low incidence of complications. However, surgical treatment should be considered in displaced, multifragmentary fractures or cases with significant deformity. The purpose of this retrospective case series is to report our experience in the treatment of closed and displaced midshaft clavicular fractures with pre-contoured plates using MIPO technique, to describe the technique and report preliminary functional results. Methods: Retrospective series of 13 patients (11 males [84.6%] and 2 females [15.4%], mean age: 31 years), with closed and displaced midshaft clavicle fractures classified as type 2B according to Robinson (Edinburgh) treated by reduction and internal fixation with pre-contoured plates osteosynthesis using minimally invasive technique (MIPO) between April 2010 and November 2013. Mean follow-up: 13 months (range 11-25). Radiographic and tomographic controls were carried out to assess function using modified Constant-Murley scale, QuickDASH Questionnaire and the visual analogue scale to evaluate pain. Results: Average time to surgery was 8 days, surgical time: 35 minutes, days in hospital after surgery: 1.28. Clinical and radiological consolidation was recorded at 15.2 weeks on average. The average modified Constant-Murley score was 88, QuickDASH 26.9 and visual analogue scale 0.3. No systemic or cosmetic complications were recorded. Conclusion: Minimally invasive plate osteosynthesis (MIPO) in displaced and closed midshaft clavicle fractures represented a reproducible technique with reduced surgical time and acceptable functional scores. Level of Evidence: IV

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The method of osteogenesis by distraction is a known technique in orthopaedics for the management of bone defects secondary to trauma, infections or tumours. New strategies have been developed for decreasing the external fixator time. The use of the minimally invasive plate osteosynthesis technique is a secure approach through a percutaneous fixation technique in the anterior aspect of the femur that permits minimal dissection of the soft tissues while preventing cross-contamination with the pin tracts of the external fixators. The goal of this article is to show that a new surgical technique, to preserve the benefits related to the internal fixation and at the same time decrease the risk of infection, can be used to perform femoral plating after bone distraction with a low contact plate through an anterior approach to the femur while still taking adequate care of the soft tissues.

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Introducción: Las fracturas de tobillo son lesiones traumáticas frecuentes. El tratamiento, en general, es quirúrgico. La cirugía puede ser abierta o percutánea. El objetivo de este estudio es comparar el método mínimamente invasivo y el de la cirugía convencional abierta en el tratamiento de las fracturas detobillo AO B. Materiales y Métodos: Estudio prospectivo comparativo de 75 casosde fracturas AO B operados con MIPO y 58 casos operados por vía convencional. Se agruparon según la clasificación AO. Se evaluaron las características durante el período intraoperatorio y la hospitalización, los resultados funcionales, según los puntajes de la AOFAS y de Weber, y los resultados radiológicos El seguimiento promedio de ambos grupos fue de 20.4 meses. Resultados: Se mencionan los resultados comparativos del tiempo quirúrgico, la estadía hospitalaria, el tiempo de fluoroscopia, la carga del peso. El puntaje de la AOFAS a los 3 meses: grupo A: 96,5 y grupo B: 99. Reducción radiológica: 97,4% con MIPO y 98,3% de los casos convencionales. Retorno a la actividad laboral: grupo A, 3.6 meses promedio, grupo B: 2.5 meses promedio. Retorno a la actividad deportiva: grupo A: media 4.8 meses; grupo B: media 3.7 meses. Conclusiones: De este estudio, se desprende que la MIPO para tratar las fracturas transindesmales es una buena opción, la evolución y la recuperación son más rápidas que con la técnica abierta, y el índice de complicaciones es bajo.

Introduction: Ankle fractures are common traumatic injuries. Treatment is usually surgical. Surgery may be open or percutaneous. The aim of this study is to compare the minimally invasive method and the conventional open reduction internal fixation surgery in the treatment of AO type B ankle fractures. Methods: This prospective study included 75 patients with AO type B ankle fracture operated on with MIPO technique and 58 patients operated on by RAFI technique. They were grouped according to the AO classification. Intraoperative characteristics and hospitalization, functional outcomes according to AOFAS and Weber scores, and radiological results were evaluated. The follow-up was 20.4 months for both groups. Results: Comparative results of surgical time, hospital stay, fluoroscopy time, weight load. AOFAS at 3months: Group A, 96.5 points, and group B, 99 points. Anatomical reduction: 97.4% with MIPO technique and 98.3% using RAFI technique. Return to work activity: Group A, average 3.6 months; Group B: average 2.5 months. Return to sport: in Group A: mean 4.8 months; Group B: mean 3.7 months. Conclusions: It is clear from this study that the MIPO technique for the treatment of syndesmotic fractures isa good choice; the evolution and recovery are faster than with the open surgery, with a low complication rate.

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Introducción: Las fracturas distales de tibia son un desafío terapéutico debido a la escasa cobertura y la particular vascularización. Los objetivos de este estudio son analizar los resultados clínicos y funcionales de los pacientes con fractura de tibia distal, tratados con técnica MIPO con placas bloqueadas; comparar los resultados del grupo de fracturas AO 43A con el de fracturas AO 43C1-C2; y comparar los resultados de la técnica MIPO con el tratamiento abierto convencional. Materiales y Métodos: Entre 2004 y 2012, se evaluaron 32 fracturas de tibia distal tratadas con la técnica MIPO. El 59,4% tenía fracturas AO 43A y el 40,6%, AO 43C. Seguimiento promedio: 39.6 meses, mediante la escala de la AOFAS y radiología. Se consignaron las complicaciones. Se compararon los resultados de los grupos AO A y AO C. Resultados: El grupo AO A: media de 95,89 puntos en la escala AOFAS, en el posoperatorio. El grupo AO C1-2: media de 92,15 puntos en el posoperatorio. Carga del peso corporal: a las 8.7 semanas promedio. Comparación entre AO 43A y AO 43C: p = 0,46 (no significativa). Retorno a la actividad previa a la lesión: 9.3 meses promedio. Comparación entre tipo A y tipo C: p = 0,16 (no significativa). Se detectaron complicaciones en el 18,75% y se retiró la osteosíntesis en 14 casos. Conclusiones: La osteosíntesis mínimamente invasiva con placa y tornillos es una buena opción para las fracturas de tibia distal; con buena evolución clínico-funcional y escasas complicaciones cuando se la compara con la cirugía abierta. Las fracturas 43A presentan menos complicaciones mayores que las 43C, tratadas con la técnica MIPO. Nivel de evidencia: IV.

Introduction: Distal tibial fractures are a therapeutic challenge due to the limited coverage and specific vascularization. The aims of this study are to analyze the clinical outcome and functional results in patients with tibial fracture treated with MIPO technique with locked plates, and to compare AO 43A and AO 43C1-C2 fracture results, and conventional open treatment with MIPO technique. Methods: Between 2004 and 2012, 32 distal tibial fractures treated with MIPO technique were evaluated. The 59.4% were AO 43A fractures and 40.6% were AO 43C. Mean follow-up: 39.6 months using AOFAS Score and X-rays. Complications were recorded. Results in AO A and AO C groups were compared. Results: Mean postoperative AOFAS score was 95.89 and 92.15 in AO A fracture and AO C1-2 fractures respectively. The mean time of weight bearing was 8.7 weeks. The mean time to return to activities was 9.3 months. Complications were detected in the 18.75% and removal of the hardware was necessary in 14 cases. Conclusions: Minimally invasive plate osteosynthesis is a good choice for tibial distal fractures, clinical and functional outcomes are good, and there are fewer complications in comparison to open surgery. AO 43A fractures have less complications than AO 43C with this technique. Level of evidence: IV.

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Objetivo: Mostrar y analizar los resultados del tratamiento de un grupo de fracturas diafisarias de húmero con técnica MIPO. Se hizo particular énfasis en el análisis del dolor durante el posoperatorio inmediato, la demora en la reincorporación a las actividades cotidianas básicas, los tiempos hasta alcanzar la consolidación radiológica y las complicaciones. Materiales y métodos: Se evaluaron, en forma retrospectiva, 15 fracturas diafisarias de húmero. La edad promedio era de 57 años (18-84). El seguimiento promedio fue de 26 meses (12-96). Ocho casos fueron tratados con técnica MIPO por vía anterior utilizando implantes rectos, y siete, con técnica MIPO e implantes helicoidales. Resultados: Todos los casos alcanzaron la consolidación. El tiempo promedio hasta la consolidación radiológica fue de 12 semanas (6-32). Salvo un caso con retraso de la consolidación, el tiempo promedio fue de 10 semanas (6-16). El puntaje promedio del dolor según la escala analógica visual durante las primeras 48 horas del posoperatorio fue 2,4 (1-4). El tiempo promedio hasta retomar las actividades cotidianas básicas fue de 9 días (4-17). Las complicaciones fueron retraso de la consolidación (1 caso), infección superficial (1 caso) y tenosinovitis de la porción larga del bíceps (1 caso). Conclusiones: La técnica MIPO mostró ser un método con alta tasa de consolidación en un tiempo igual o inferior al de otros métodos de osteosíntesis. Los pacientes sufrieron dolor leve durante el posoperatorio inmediato y la reincorporación a las actividades cotidianas básicas fue rápida. Las complicaciones fueron tratadas con éxito

To show and analyze the treatment of a group of humeral diaphyseal fractures with the minimally invasive plate osteosynthesis (MIPO) technique. Special emphasis was placed in analyzing immediate postoperative pain; delay to return to basic daily activities; time to radiological healing; and complications.Methods: Fifteen humeral diaphyseal fractures were assessed retrospectively. The average age was 57 years (18-84). The average follow-up was 26 months (12-96). Eight cases were treated with anterior MIPO technique using straight implants. Seven cases were treated with MIPO technique using helical implants.Results: Healing was reached in all cases. The average time to radiological healing was 12 weeks (6-32). Excluding one case with delayed union, the average time was 10 weeks (6-16). The average pain score according to the visual analogue scale for the first 48 hours after surgery was 2.4 (1-4). The average time needed to return to basic daily activities was 9 days (4-17). Complications included delayed union (1 case), superficial infection (1 case) and tenosynovitis of the long head of the biceps (1 case).Conclusions: The MIPO technique proved to be a method with a high healing rate requiring the same time or less compared to other osteosynthesis methods. It caused mild immediate postoperative pain and return to basic daily activities was quick. Complications were managed successfully.

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Objetivo: Comunicar la técnica mínimamente invasiva por vía posterior para la osteosíntesis de las fracturas diafisarias de húmero y evaluar los resultados clínicos y radiológicos de una serie de pacientes. Materiales y métodos: Se evaluaron 11 pacientes (9 hombres y 2 mujeres; edad promedio, 33 años). Diez fracturas eran cerradas y una era expuesta. Se describe prolijamente la técnica quirúrgica. El seguimiento promedio fue de 22 meses. Resultados: La flexo-extensión del codo fue de 140º-0°. La movilidad del hombro fue de 170° de elevación, 70° de rotación externa y rotación interna de D9. El dolor según la escala analógica visual: 0 puntos, DASH: 6; puntaje de la Clínica Mayo: 96, test de la UCLA: 33 puntos. Todas las fracturas consolidaron. Se observó una alineación normal de la diáfisis humeral en 3 de los pacientes, 7 tenían alguna deformidad en varo y uno en valgo. Un paciente desarrolló una parálisis radial posoperatoria y otro necesitó la extracción del implante por una infección. Conclusiones: La técnica mínimamente invasiva posterior es una buena opción para el tratamiento de fracturas diafisarias de húmero. Es particularmente útil cuando la línea de fractura está cerca de la fosa olecraneana, debido a que, en estos casos, la técnica mínimamente invasiva por vía anterior es difícil de realizar. Los buenos resultados son similares a los reportados con las vías anterior y lateral

AbstractBackground: To report the MIPO technique through a posterior approach for the treatment of humeral shaft fractures, and to evaluate the clinical and radiographic outcomes of a series of patients treated with this procedure.Methods: Eleven patients were evaluated (9 men and 2 women; mean age, 33 years old). Ten fractures were closed and one open. The surgical technique is described in detail. The follow-up was 22 months.Results: Elbow flexo-extension was 140°-0°. Shoulder motion was: 170° of elevation, 70° of external rotation and internal rotation of D9. Pain (VAS): 0, MEPS: 96 points, UCLA test: 33 points. All fractures healed. Normal alignment of the shaft fracture was evidenced in 3 patients, a varus angulation was observed in 7 and a valgus angula-tion in one patient. Radial postoperative palsy was noted in one patient and another required implant removal due to an hematogenous infection.Conclusions: This technique represents a reliable therapeutic option for any middle and distal shaft fractures. It is particularly useful in fractures of the distal diaphysis when the line of fracture is near the olecranon fossa since, in these cases, the MIPO through an anterior approach is not feasible. Good results are similar to those reported in the MIPO technique through the anterior or lateral approach.

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Objetivo: Mostrar y analizar los resultados del tratamiento de un grupo de fracturas diafisarias de húmero con técnica MIPO. Se hizo particular énfasis en el análisis del dolor durante el posoperatorio inmediato, la demora en la reincorporación a las actividades cotidianas básicas, los tiempos hasta alcanzar la consolidación radiológica y las complicaciones. Materiales y métodos: Se evaluaron, en forma retrospectiva, 15 fracturas diafisarias de húmero. La edad promedio era de 57 años (18-84). El seguimiento promedio fue de 26 meses (12-96). Ocho casos fueron tratados con técnica MIPO por vía anterior utilizando implantes rectos, y siete, con técnica MIPO e implantes helicoidales. Resultados: Todos los casos alcanzaron la consolidación. El tiempo promedio hasta la consolidación radiológica fue de 12 semanas (6-32). Salvo un caso con retraso de la consolidación, el tiempo promedio fue de 10 semanas (6-16). El puntaje promedio del dolor según la escala analógica visual durante las primeras 48 horas del posoperatorio fue 2,4 (1-4). El tiempo promedio hasta retomar las actividades cotidianas básicas fue de 9 días (4-17). Las complicaciones fueron retraso de la consolidación (1 caso), infección superficial (1 caso) y tenosinovitis de la porción larga del bíceps (1 caso). Conclusiones: La técnica MIPO mostró ser un método con alta tasa de consolidación en un tiempo igual o inferior al de otros métodos de osteosíntesis. Los pacientes sufrieron dolor leve durante el posoperatorio inmediato y la reincorporación a las actividades cotidianas básicas fue rápida. Las complicaciones fueron tratadas con éxito (AU)

To show and analyze the treatment of a group of humeral diaphyseal fractures with the minimally invasive plate osteosynthesis (MIPO) technique. Special emphasis was placed in analyzing immediate postoperative pain; delay to return to basic daily activities; time to radiological healing; and complications.Methods: Fifteen humeral diaphyseal fractures were assessed retrospectively. The average age was 57 years (18-84). The average follow-up was 26 months (12-96). Eight cases were treated with anterior MIPO technique using straight implants. Seven cases were treated with MIPO technique using helical implants.Results: Healing was reached in all cases. The average time to radiological healing was 12 weeks (6-32). Excluding one case with delayed union, the average time was 10 weeks (6-16). The average pain score according to the visual analogue scale for the first 48 hours after surgery was 2.4 (1-4). The average time needed to return to basic daily activities was 9 days (4-17). Complications included delayed union (1 case), superficial infection (1 case) and tenosynovitis of the long head of the biceps (1 case).Conclusions: The MIPO technique proved to be a method with a high healing rate requiring the same time or less compared to other osteosynthesis methods. It caused mild immediate postoperative pain and return to basic daily activities was quick. Complications were managed successfully.(AU)

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Objetivo: Comunicar la técnica mínimamente invasiva por vía posterior para la osteosíntesis de las fracturas diafisarias de húmero y evaluar los resultados clínicos y radiológicos de una serie de pacientes. Materiales y métodos: Se evaluaron 11 pacientes (9 hombres y 2 mujeres; edad promedio, 33 años). Diez fracturas eran cerradas y una era expuesta. Se describe prolijamente la técnica quirúrgica. El seguimiento promedio fue de 22 meses. Resultados: La flexo-extensión del codo fue de 140º-0°. La movilidad del hombro fue de 170° de elevación, 70° de rotación externa y rotación interna de D9. El dolor según la escala analógica visual: 0 puntos, DASH: 6; puntaje de la Clínica Mayo: 96, test de la UCLA: 33 puntos. Todas las fracturas consolidaron. Se observó una alineación normal de la diáfisis humeral en 3 de los pacientes, 7 tenían alguna deformidad en varo y uno en valgo. Un paciente desarrolló una parálisis radial posoperatoria y otro necesitó la extracción del implante por una infección. Conclusiones: La técnica mínimamente invasiva posterior es una buena opción para el tratamiento de fracturas diafisarias de húmero. Es particularmente útil cuando la línea de fractura está cerca de la fosa olecraneana, debido a que, en estos casos, la técnica mínimamente invasiva por vía anterior es difícil de realizar. Los buenos resultados son similares a los reportados con las vías anterior y lateral (AU)

AbstractBackground: To report the MIPO technique through a posterior approach for the treatment of humeral shaft fractures, and to evaluate the clinical and radiographic outcomes of a series of patients treated with this procedure.Methods: Eleven patients were evaluated (9 men and 2 women; mean age, 33 years old). Ten fractures were closed and one open. The surgical technique is described in detail. The follow-up was 22 months.Results: Elbow flexo-extension was 140°-0°. Shoulder motion was: 170° of elevation, 70° of external rotation and internal rotation of D9. Pain (VAS): 0, MEPS: 96 points, UCLA test: 33 points. All fractures healed. Normal alignment of the shaft fracture was evidenced in 3 patients, a varus angulation was observed in 7 and a valgus angula-tion in one patient. Radial postoperative palsy was noted in one patient and another required implant removal due to an hematogenous infection.Conclusions: This technique represents a reliable therapeutic option for any middle and distal shaft fractures. It is particularly useful in fractures of the distal diaphysis when the line of fracture is near the olecranon fossa since, in these cases, the MIPO through an anterior approach is not feasible. Good results are similar to those reported in the MIPO technique through the anterior or lateral approach.(AU)

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