Unicortical versus bicortical plate fixation for midshaft clavicular fractures.

BACKGROUND: The aim of this study was to compare the functional and radiological outcomes of unicortical vs bicortical fixation in patients with midshaft clavicular fractures who were treated using pre-contoured locking plates. METHODS: We performed a prospective multicenter study of 45 individuals who underwent open reduction and internal fixation of midshaft clavicular fractures with precontoured locking plates between March 2017 and December 2019. Twenty-five patients were treated with bicortical screws and 20 patients with unicortical screws. Functional outcomes were assessed at 6 months and 12 months after surgery using the Constant score, the 11-item version of the Disabilities of Arm, Shoulder and Hand (Quick- DASH) score and the Single Assessment Numeric Evaluation (SANE) score. Pain was evaluated using a visual analog scale (VAS). The rate of return to work and sports was also recorded. Radiologic evaluation was obtained in the immediate postoperative day, monthly until fracture consolidation, at 6 months and 12 months. All intraoperative and postoperative complications were documented. RESULTS: At both 6 and 12 months, the follow-up rates were 100%, and the mean age was 28.5 years (range, 20 to 45 years). The mean postoperative Constant score, Quick DASH, and SANE score at 12 months were 93.5 (±6), 2.3 (±3), and 92% (±7), respectively. There were no significant differences in the functional scores between the groups neither at 6 months nor at 12 months. Of the 30 active workers, 97% were able to return to their previous working routine and from the 25 patients who practiced sports before the injury,92% returned to sports all at the same level. All the fractures healed in both groups. There were 6 complications (13%). CONCLUSION: In young, active patients with displaced midshaft clavicular fractures, both unicortical and bicortical locked plates achieved 100% bone consolidation, with excellent functional outcomes and a low rate of complications without significant differences between the groups. Therefore, locked plates with unicortical fixation could be a very good alternative for the management of young patients with midshaft clavicular fractures, potentially avoiding severe neurovascular complications. LEVEL OF EVIDENCE: Prospective comparative (Level II).

Volar Capsulodesis With Early Active Motion for the Treatment of Chronic Proximal Interphalangeal Joint Hyperextension Deformity.

PURPOSE: We evaluated the clinical outcomes of a series of patients with hyperextension deformity of the proximal interphalangeal joint treated with volar capsulodesis. METHODS: This retrospective study included 16 patients with symptomatic locking of the proximal interphalangeal joint who underwent volar capsulodesis and were followed for at least 2 years. We excluded patients with severe, degenerative changes on plain radiographs. Clinical evaluation included the Quick Disabilities of the Arm, Shoulder, and Hand questionnaire; Catalano's scale for proximal interphalangeal joint hyperextension deformity correction; a visual analog scale for pain; range of motion; and grip strength. Hyperextension recurrence and residual flexion contracture were also recorded. RESULTS: There were 2 women and 14 men, with a mean age of 36 years (range, 22-60 years). The mean preoperative pain scores according to the visual analog scale were 3.6 (range,1-8) and 0.5 (range, 0-3) at the final follow-up. No patient had a recurrence of the hyperextension deformity. The average Quick Disabilities of the Arm, Shoulder, and Hand score was 5, and the mean grip strength was 87% of the contralateral side. Five patients were rated as having excellent results, 9 patients as having good results, and 2 patients as having fair results. Residual flexion contracture was less than 10° in 13 patients and more than 10° in 3 cases. All patients returned to unrestricted activities. CONCLUSION: Volar capsulodesis with early active motion demonstrated favorable results and could be considered as a surgical option for the treatment of chronic hyperextension deformity of the proximal interphalangeal joint. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

The anatomy of the anconeus nerve redefined.

The anconeus nerve is the longest branch of the radial nerve and suitable as a donor for the neurotization of the axillary nerve. The aim of this study was to map its topographical course with reference to palpable, anatomical landmarks. The anconeus nerve was followed in 15 cadaveric specimens from its origin to its entry to the anconeus. It runs between the lateral and the medial head of the triceps before entering the medial head and running intramuscularly further distal. Exiting the muscle, it lies on the periosteum and the articular capsule of the elbow, before entering the anconeus muscle. Two types of anconeus nerve in relation to branches innervating triceps were found: nine nerves also innervated the lateral triceps head, while the other six only contributed two branches to its innervation. The course of the anconeus nerve is important for harvesting as a donor nerve and to protect the nerve in surgical elbow approaches.

Fracturas articulares complejas del húmero distal. Recomendaciones para optimizar los resultados y disminuir las complicaciones / Complex articular fractures of the distal humerus. Recommendations to optimize outcomes and reduce complications

Las fracturas articulares complejas del húmero distal suponen un gran desafío para el cirujano ortopédico. La complejidad de la anatomía, la presencia de múltiples fragmentos y la mala calidad ósea representan algunas de las principales dificultades para resolver. La relativa infrecuencia de estas fracturas atenta directamente contra el entrenamiento y la sistematización del procedimiento quirúrgico y, por consiguiente, tiene impacto sobre el resultado final y la tasa de complicaciones. El objetivo de esta comunicación es proporcionar herramientas al cirujano a través de la revisión de la bibliografía y la experiencia de los autores para disminuir las complicaciones y optimizar los resultados en el tratamiento de estas fracturas..Nivel de Evidencia: V

Complex articular fractures of the distal humerus represent a real challenge for orthopedic surgeons. The complexity of the anatomy, fracture patterns, the presence of multiple fragments, and low bone density in the elderly represent some difficulties to address. The relatively low frequency of these fractures directly undermines training and systematization of the surgical procedure and therefore has an impact on the final functional outcome and complication rate. The aim of this article is to provide practical tools to the novel surgeon, through the review of the literature and the author ́s experience, to reduce complications and optimize the treatment of these fractures. Level of Evidence: V

Bicortical versus unicortical fixation of plated clavicular fractures: A biomechanical study.

PURPOSE: To compare the biomechanical properties of three plate stabilization techniques for midshaft clavicle fractures: anatomical bicortical locking construct, anatomical unicortical locking construct, and reconstruction bicortical locking construct. METHODS: We analyzed superior plating of the clavicle using an anatomical clavicle plate (Acumed) with both bicortical or unicortical screw fixation and a locking reconstruction plate (DePuy-Synthes). Twenty-one fourth generation composite clavicles were used for non-destructive stiffness testing in axial loading, bending, and torsion. Fifteen composite clavicles and 17 foam clavicles were used for cyclic failure testing using a combined loading method that included all three loading modes. RESULTS: No significant differences were found between the three constructs in torsional stiffness nor in vertical bending loading. In axial loading, the anatomical bicortical locking construct was significantly stiffer than either anatomical unicortical locking construct or the reconstruction bicortical locking construct. The unicortical fixation was also significantly stiffer than the reconstruction bicortical locking construct. Regarding failure testing, there was not a significant difference between the bicortical and unicortical anatomical locking constructs; however, both were significantly stronger than bicortical screw fixation in the reconstruction plate. CONCLUSION: Based on the biomechanical performance of these constructs, unicortical locked plate fixation may be a reasonable option in the treatment of displaced midshaft clavicle fracture fixation.

Osteoma osteoide de falange. Reporte de cinco casos y revisión bibliográfica / Phalanx osteoid osteoma. Five-case report and literature review

Introducción: El osteoma osteoide de falange es un cuadro infrecuente. El objetivo de este artículo es presentar cinco pacientes con diagnóstico histopatológico de osteoma osteoide de falange y resaltar los aspectos más relevantes del diagnóstico y el tratamiento. Materiales y Métodos: Estudio descriptivo, retrospectivo. Se evaluaron el dolor, según la escala analógica visual, la movilidad activa y el puntaje QuickDASH antes de la cirugía y en el control final a los 35.4 meses. Resultados: El tiempo medio desde la primera consulta hasta el diagnóstico fue de 10.6 meses (rango 5-16). El puntaje QuickDASH medio preoperatorio fue de 22,72 (rango 6,8-40,9). Luego del seguimiento medio de 35.4 meses (rango 17-63), todos los pacientes estaban satisfechos con el resultado. El puntaje medio de dolor fue 0. El puntaje QuickDASH medio fue 0. Conclusiones: El osteoma osteoide debe pensarse como diagnóstico diferencial ante un paciente que consulta por dolor digital subagudo o crónico que cede con antinflamatorios no esteroides. El tratamiento quirúrgico mediante el curetaje simple o la resección en bloque logra resultados satisfactorios. Sin embargo, como su prevalencia es baja, se suele pasar por alto y así se retrasan el diagnóstico y el tratamiento. Nivel de Evidencia; IV

Introduction: Osteoid osteomas are rarely found in the phalanges. The purpose of this study is to report 5 cases with histologic diagnosis of phalanx osteoid osteoma and highlight the most important aspects of its diagnosis and treatment. Materials and Methods: A descriptive, retrospective study was conducted. Evaluation included pain level using the visual analog scale (VAS), active range of motion, and QuickDASH score before surgery and at final follow-up (mean, 35.4 months). Results: The mean time from first consultation to diagnosis was 10.6 months (range, 5-16 months). The mean preoperative QuickDASH score was 22.72 (range, 6.8-40.9). At last follow-up (mean, 35.4 months; range, 17-63), all patients were satisfied with the outcome. The mean VAS score for pain was 0. The mean QuickDASH score was 0. Conclusions: Osteoid osteoma should be considered in the differential diagnosis when patients complain of subacute or chronic digital pain that improves with NSAIDs. Surgical treatment by simple curettage or en bloc resection shows satisfactory results. However, due to its low prevalence, osteoid osteoma is commonly underdiagnosed resulting in diagnosis and treatment delays. Level of Evidence; IV

Colgajo dorsolateral versus colgajo en isla mediopalmar radial para el tratamiento de lesiones traumáticas distales del pulgar. Evaluación clínica / Dorsolateral flap vs. radial midpalmar island flap in the treatment of traumatic distal thumb injuries. Clinical evaluation

Objetivo: Evaluar clínicamente a pacientes con lesiones distales combinadas del pulgar tratados mediante colgajo dorsolateral o colgajo en isla mediopalmar radial. Materiales y Métodos: Se comparó retrospectivamente a 20 pacientes (14 hombres y 6 mujeres; promedio de edad 35 años) con lesiones traumáticas combinadas distales del pulgar, operados por dos cirujanos, con técnicas diferentes. Los pacientes no tenían antecedentes quirúrgicos y el seguimiento mínimo fue de 24 meses. Se evaluaron el resultado subjetivo usando el índice de satisfacción, la escala analógica visual para dolor y el puntaje QuickDASH, y el resultado objetivo mediante el test de discriminación de 2 puntos, el tiempo quirúrgico promedio y la necesidad de reeducación espacial digital. Resultados: La media desde el ingreso hasta el alta laboral fue de 7 semanas (rango 6-8). Resultados promedio posoperatorios: escala analógica visual 01/10, ambos grupos. Grupo con colgajo dorsolateral: índice de satisfacción 97%, test de discriminación de 2 puntos 4 mm, puntaje QuickDASH 2,5; tiempo quirúrgico 45 min, sin necesidad de reeducación espacial digital. Grupo con colgajo en isla mediopalmar radial: índice de satisfacción 92%, test de discriminación de 2 puntos 6 mm, puntaje QuickDASH 8, tiempo quirúrgico 60 min; 4 pacientes requirieron reeducación espacial digital. Conclusión: Los colgajos dorsolateral y en isla mediopalmar radial resultaron eficaces en el tratamiento de lesiones traumáticas distales del pulgar, aunque el colgajo dorsolateral tuvo mejores puntajes de evaluación objetiva y requirió menos tiempo quirúrgico. Nivel de Evidencia: III

Objective: To clinically evaluate patients with combined distal thumb lesions treated by a dorsolateral flap or radial midpalmar island flap. Materials and Methods: We retrospectively compared 20 patients (14 males and 6 females, averaging 35 years) with combined distal thumb traumatic lesions, who were operated on by two surgeons using different techniques. Patients had no previous surgical history and a minimum follow-up period of 24 months. Subjective outcome was evaluated by satisfaction index (SI), visual analogue scale (VAS), and QuickDASH score. Objective outcome was evaluated by two-point discrimination test (TPDT), average surgical time (ST), and need for digital spatial reeducation (DSR). Results: Time from admission to medical discharge averaged 7 weeks (range, 6-8). Average postoperative results: VAS for pain, 01/10 (both groups); IS, 97% vs. 92% (dorsolateral flap group vs. radial midpalmar island flap); TPDT, 4 mm vs. 6 mm; QuickDASH, 2.5 vs. 8; ST, 45 minutes vs. 60 minutes; need for DSR, 0 vs. 4 cases. Conclusion: Both the dorsolateral flap and the radial midpalmar island flap techniques were effective in the treatment of distal thumb traumatic lesions, although the dorsolateral flap achieved better objective evaluation scores and required less ST. Level of Evidence: III

Metacarpal Aneurysmal Bone Cyst En Bloc Resection Reconstructed With Osteoarticular Allograft.

Aneurysmal bone cysts are large lytic lesions that appear most often around metaphyseal bone. The lesions are locally aggressive with high recurrence rates. Therefore, wide resection is commonly necessary, leading to challenging reconstruction of the defect, especially when the articular surface is involved. We present a case of an aneurysmal bone cyst of the fourth metacarpal, treated with an en bloc resection and reconstruction with a metacarpal osteoarticular allograft. At 8 years after surgery, the patient has shown no signs of recurrence, but radiographic articular reabsorption was noted. However, the patient showed an excellent outcome with a satisfactory active range of motion and grip strength. Despite potential complications, osteoarticular allograft is a feasible alternative when autologous osteoarticular reconstruction is not an option.

Innervation of the Proximal Interphalangeal Joint: An Anatomical Study.

PURPOSE: To describe the innervation of the proximal interphalangeal (PIP) joint of the fingers as well as the anatomical relations of the articular branches. METHODS: In this anatomical study, 52 fresh-frozen index, long, ring, and little fingers of 6 male and 4 female cadavers were dissected after injection of a colored latex composite. The anatomical dissections were performed under ×3.5 and ×6.0 magnifications. The numbers of articular nerve branches that penetrated the PIP joint on both sides of the fingers were quantified and patterns of innervation were established. We also measured the origin of the branches regarding the PIP articular line, the angle of emergence, and the diameter of the nerves. RESULTS: The PIP joint was innervated by one articular branch of the proper palmar digital nerve at each side of the finger (pattern 1). Less frequently, an additional distal branch from the same proper palmar digital nerve was found (pattern 2). Dorsal articular branches were identified innervating only the little finger. CONCLUSIONS: The findings suggest that PIP joints of the fingers have a consistent articular nerve anatomy predominantly provided at the palmar aspect of the joint. These findings provide an anatomical basis for procedures to denervate the PIP joint. CLINICAL RELEVANCE: An accurate understanding of peripheral nerve anatomy of the PIP joint is essential to improve outcomes in denervation techniques.

Pedicled Vascularized Bone Graft of the Distal Radius for Recalcitrant Nonunion of the Distal Humerus.

OBJECTIVES: To analyze the clinical and radiological outcomes of a series of patients treated with a pedicled vascularized bone graft (VBG) of the distal radius for the treatment of recalcitrant atrophic nonunions of the distal humerus. DESIGN: Retrospective clinical study. SETTING: University-affiliated teaching hospital. PATIENTS: Fifteen patients with supracondylar humeral atrophic nonunions with at least 3 previous failed surgical interventions were included. INTERVENTION: Debridement of the distal humerus nonunion through a posterior elbow approach with provisional fixation was performed. Then, a pedicled VBG was harvested from the distal radius and tunneled back into the humeral bone defect. Iliac crest was used as needed, both for the nonunion and to stabilize the radius. Finally, definitive fixation with 2 locked plates was performed. MAIN OUTCOME MEASUREMENTS: Radiological results, complications, elbow range of motion, Mayo elbow performance score, and subjective pain were evaluated. RESULTS: There were 4 male and 11 female patients, with a mean age of 51 (range, 28-73) years. The mean follow-up period was 46 (range, 37-72) months with a minimum of 3 years. Radiological consolidation was achieved in all patients. Elbow range of motion was >100 degrees in 11 patients and between 50 and 100 degrees in 4 patients. Preoperative Mayo scores were poor in all patients. At final follow-up, Mayo scores were excellent in 3, good in 9, and fair in 3 patients. The mean postoperative visual analog scale score was 1.2 (range 0-3). CONCLUSIONS: Pedicled VBG of the distal radius was shown to be a reliable and effective alternative for the treatment of recalcitrant atrophic nonunions of the distal humerus, when other methods have failed. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Vascularized Distal Radius Bone Graft for Treatment of Ulnar Nonunion.

Various methods have been reported to treat forearm nonunions with good results. However, in the presence of infection, inadequate vascularity of surrounding tissues, or failed prior grafts, vascularized bone grafts are a valid alternative. We describe the surgical technique to obtain distal radius vascularized bone graft pedicled on the radial artery (RA) and its clinical application in 1 case of an ulnar nonunion. We studied the surgical technique in 12 freshly injected cadavers. In the distal forearm, the RA provides several periosteal branches to supply the distal radius metaphysis. These vessels are located between the distal insertion of the brachioradialis and the deep surface of the radial half of the pronator quadratus. A 6-cm vascularized bone graft can be harvested from the radius, and dissection of the RA enables a long pedicle with a wide arc of rotation readily able to reach the proximal part of the ulna. The present technique is a reproducible alternative that allows the treatment of bone defects up to 6 cm, without the potential technical difficulties of a free bone flap.

Innervation of the interphalangeal joint of the thumb: anatomical study.

We dissected 30 cadaveric thumb interphalangeal joints to delineate the sensory nerve anatomy of its capsule. Four articular branches supplying the interphalangeal joint capsule of the thumb were found in all specimens. Ulnar and radial proper digital nerves provide one palmar capsular nerve branch on their respective sides. Of the two dorsal branches of the radial nerve at the dorsum of the thumb, we observed that each nerve provided one branch to the interphalangeal dorsal capsule. Our findings demonstrate a consistent pattern of innervation and may provide the anatomical basis to the treating surgeon for an effective and safe denervation of the interphalangeal joint of the thumb.

Injerto óseo vascularizado pediculado del radio distal para tratar la seudoartrosis recalcitrante del cúbito / Vascularized bone graft of the distal radius for recalcitrant ulnar pseudoarthrosis

Introducción: El objetivo de este trabajo es presentar los resultados clínicos y radiológicos de una serie de pacientes tratados con injerto óseo vascularizado pediculado del radio distal para seudoartrosis recalcitrantes de cúbito diafisario o proximal. Materiales y Métodos: Se realizó un estudio retrospectivo que incluyó a pacientes con seudoartrosis del cúbito diafisario o proximal con defectos <6 cm y, al menos, tres cirugías previas y un seguimiento mínimo de dos años tratados con injerto óseo vascularizado pediculado del radio distal. Se registró la cantidad de cirugías previas. Se evaluaron el rango de movilidad del codo y la muñeca, la fuerza de puño comparativa, el dolor mediante la escala analógica visual, el cuestionario QuickDASH y el puntaje de la Clínica Mayo para codo. Resultados: Se incluyó a siete pacientes. La edad media fue de 42 años (rango 26-64). El número promedio de cirugías previas fue 4 (rango 3-7). El seguimiento medio fue de 31 meses (rango 24-43). Todas las seudoartrosis consolidaron. El puntaje de la Clínica Mayo fue bueno en 4 pacientes, excelente en 2 pacientes y moderado en uno. El puntaje QuickDASH posoperatorio promedio fue de 13 (rango 0-29). El arco de flexo-extensión de la muñeca fue del 81% del contralateral. El rango de movilidad del codo fue >100° en 5 pacientes y de 50°-100° en 2 pacientes. Conclusión: El injerto óseo vascularizado pediculado del radio distal es una alternativa eficaz para el tratamiento de la seudoartrosis del cúbito. Nivel de Evidencia: IV

Introduction: The purpose of this study was to analyze the clinical and radiological outcomes of a series of patients treated with pedicled distal radius vascularized bone graft for recalcitrant ulnar nonunions. Methods: A retrospective study was performed. The inclusion criteria were patients with diaphyseal or proximal ulnar nonunions with bone defects <6 cm, at least three previous surgeries and a minimum follow-up of 2 years, treated with pedicled vascularized bone graft of distal radius. The number of previous surgeries was recorded. Elbow and wrist range of motion, comparative grip strength, and pain using the Visual Analogue Scale, QuickDASH questionnaire and Mayo Clinic score for elbow were evaluated. Results: Seven patients were included. The mean age was 42 years (range 26-64). The average number of previous surgeries was 4 (range 3-7). The mean follow-up was 31 months (range 24-43). All pseudoarthrosis consolidated. The Mayo Clinic score was good in 4 patients, excellent in 2 patients and moderate in one patient. The mean postoperative Quick- DASH score was 13 (range 0-29). Flexion-extension arch of the wrist was 81% of the contralateral. The elbow range of motion was >100° in 5 patients and 50°- 100° in 2 patients. Conclusion: The pedicled vascularized bone graft of the distal radius is an effective alternative for the treatment of recalcitrant ulnar nonunions. Level of Evidence: IV

Tratamiento quirúrgico de las fracturas mediodiafisarias desplazadas de clavícula mediante placas precontorneadas con técnica mininvasiva / Surgical treatment of clavicle displaced midshaft fractures with pre-contoured plates using mini invasive technique (MIPO)

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

Extended Posterior Interosseous Artery Flap: Anatomical and Clinical Study.

PURPOSE: A reverse-flow pedicled flap from the posterior interosseous artery (PIA) has been used to cover defects on the dorsal and volar aspects of the hand. However, the original description of this flap does not reach further than the metacarpophalangeal joints of the 4 ulnar digits. In the present study, we describe a distal variant (type 2) of the PIA flap, which changes the pivot point of the classic variant (type 1) and which can provide full coverage of single or multiple digits in the entire dorsum and palmar surface of the fingers. METHODS: An anatomical study was performed on 26 cadaveric specimens to assess the presence of the anastomosis between the PIA and the dorsal intercarpal arch (DIA). In addition, the gain in pedicle length using the DIA anastomosis as a pivot point was compared with the classic pivot point at the anterior interosseous artery. A clinical study in 19 patients with soft tissue defects distal to the proximal interphalangeal joint of the fingers was also performed to assess the viability and clinical outcomes of the new variant of the PIA flap. RESULTS: The PIA was identified reaching the dorsal carpal arch in all anatomical specimens. The mean pedicle length of the fifth extensor compartment artery was 4.8 cm (range, 4.1-5.3 cm). The mean arterial diameter was 0.8 mm (range, 0.6-1.2 mm). In the clinical study, 17 flap reconstructions were done for posttraumatic lesions and 2 postburn contractures. All extended PIA flap procedures were performed successfully without loss of the flap or significant partial necrosis. We had only 1 superficial infection. There was no need for revision of the flap in any case. CONCLUSIONS: By extending the pivot point of the PIA flap through the DIA, instead of the anastomosis with the anterior interosseous artery, the flap distance can be increased by about 8.5 cm, allowing complete coverage of the fingers. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Transferencia de dorsal ancho para el tratamiento de las lesiones masivas e irreparables del manguito rotador / Latissimus dorsi transfer for treatment of massive and irreparable rotator cuff injuries

Introducción: el objetivo del trabajo fue realizar una valoración clínico-radiológica de pacientes con rupturas masivas e irreparables posterosuperiores del manguito rotador tratadas con transferencia del dorsal ancho. Materiales y Métodos: Estudio retrospectivo, descriptivo, de observación. Se incluyeron pacientes <70 años con lesión masiva e irreparable posterosuperior del manguito rotador tratados con transferencia del dorsal ancho y un seguimiento mínimo de 2 años. Se valoró la movilidad y la fuerza en abducción. Se emplearon la escala analógica visual y la de Constant-Murley modificada. En las radiografías, se analizaron la distancia acromiohumeral y el grado de artropatía. Resultados: Se incluyeron 17 pacientes (12 hombres, 5 mujeres; edad promedio: 54 años [rango 34-65]). El seguimiento promedio fue 46 meses (rango 24-71). En el grupo de cirugía primaria, la ganancia de movilidad promedio en flexión anterior fue de 53º, en abducción de 50º y en rotación externa de 19º. La fuerza en abducción registró una ganancia promedio de 1,4 kg. La escala de Constant-Murley modificada fue de 75,6 (rango 63-80) al final del seguimiento. En las cirugías de revisión, la ganancia de movilidad activa en flexión anterior fue de 48º, en abducción de 30º y en rotación externa de 10º. La fuerza en abducción tuvo una ganancia promedio de 1,1 kg. La escala analógica visual posoperatoria mejoró 5,1 puntos en el grupo con cirugía primaria y 3,4 en el otro grupo. Conclusión: La transferencia del dorsal ancho para lesiones posterosuperiores del manguito rotador mejoró el rango de movilidad, la fuerza, la función del hombro y alivió el dolor.

Introduction: the aim of the study was to analyze the clinical and radiological outcomes of a series of patients with massive ruptures of the rotator cuff treated with latissimus dorsi tendon transfer. Methods: A retrospective, descriptive and observational study was performed. Patients <70 years with massive and irreparable posterosuperior lesions of the rotator cuff were treated with latissimus dorsi transfer and with a minimum follow-up of 2 years. Range of motion and strength in abduction were assessed. In addition, the visual analogue scale and modified Constant-Murley scale were recorded. Acromio-humeral distance and arthropathy stage were radiographically analyzed. Results: Seventeen patients were included (12 males, 5 females), mean age 54 years (range 34-65), with a mean followup of 46 months (range 24-71). In the primary surgery group, the average motion gain was 53º in anterior flexion, 50º in abduction and 19º in external rotation. The abduction strength recorded an average gain of 1.4 kg. Modified Constant-Murley scale of 75.6 (range 63-80) at the end of follow-up. In the revision surgery group, the gain of active motion was 48º in anterior flexion, 30º in abduction and 10º in external rotation. Abduction strength had an average gain of 1.1 kg. Postoperative visual analogue scale improved 5.1 points in the primary surgery group and 3.4 in the other group. Conclusion: Latissimus dorsi tendon transfer for the treatment of massive posterosuperior rupture of the rotator cuff showed improvements in range of motion, strength, pain relief and shoulder function.

Avulsión bilateral del pectoral mayor: reporte de un caso / Pectoralis major muscle bilateral avulsion: case report

Resumen: Reportamos el caso de una patología infrecuente, paciente de 30 años, con avulsión completa del pectoral mayor izquierdo, que sufre 10 años después, avulsión completa contralateral. Ambas avulsiones completas fueron tratadas quirúrgicamente con reinserción anatómica de la lesión logrando el paciente retornar a su actividad deportiva previa

Avulsión bilateral del pectoral mayor. Reporte de un caso / Pectoralis major muscle bilateral avulsion. Case report

Resumen: Reportamos el caso de una patología infrecuente, paciente de 30 años, con avulsión completa del pectoral mayor izquierdo, que sufre 10 años después, avulsión completa contralateral. Ambas avulsiones completas fueron tratadas quirúrgicamente con reinserción anatómica de la lesión logrando el paciente retornar a su actividad deportiva previa (AU)

Seudoartrosis recalcitrante del humero distal. Injerto oseo vascularizado del radio distal. Nueva tecnica quirurgica / Recalcitrant distal humerus nonunion. Vascularized bone graft of the distal radius. New surgical technique

Introducción: Se presenta un nuevo procedimiento quirúrgico, basado en un injerto óseo vascularizado del radio distal para la seudoartrosis recalcitrante del húmero distal. Se evalúan retrospectivamente los resultados de este procedimiento en 7 pacientes en un período de 6 años. Materiales y métodos: La edad promedio de los 7 pacientes fue de 51 años (r: 43-71), antes del último procedimiento quirúrgico tenían un promedio de 11 cirugías (entre 6 y 35). Dos eran varones y 5, mujeres. El seguimiento fue de 16 meses, promedio (r: 9-21). Seis de las fracturas iniciales fueron abiertas y una, cerrada. Los trazos iniciales de las fracturas fueron oblicuas cortas, metafisariasdistales en 3 casos, supraintercondíleas en 2 casosy en los restantes no se pudo registrar la fractura inicial. En todos los casos hubo antecedentes de infección. Cuatro pacientes tenían antecedentes de afectación del nervio radial. Todas las seudoartrosis, con independencia de su trazo, fueron inestables.Resultados: El seguimiento promedio fue de 16 meses(r: 9 y 21 m). Hubo una paresia radial que se recuperó antes de la consolidación ósea. Esta última varió entre 15 y 21 semanas (p: 17 s). La amplitud del movimiento promedio del codo fue de 76,4º, la extensión promedio fuede -32,8º y la flexión promedio, de 106,4º. La morbilidadpromedio antes de la última cirugía fue de 4 años.Conclusiones: El injerto óseo vascularizado pediculadodel radio distal debe considerarse una alternativa frente a fracasos consecutivos de la cirugía convencional en pacientes multioperados. El deterioro no sólo abarca la calidad ósea, las partes blandas y las articulaciones vecinas, sino también a los pacientes habitualmente deprimidos. La correcta planificación preoperatoria, así como un conocimiento experto de la anatomía, es obligatoria para la ejecución del procedimiento quirúrgico. Los resultados favorables obtenidos en esta corta serie de pacientes sonalentadores, pero no concluyentes

Seudoartrosis recalcitrante del humero distal. Injerto oseo vascularizado del radio distal. Nueva tecnica quirurgica / Recalcitrant distal humerus nonunion. Vascularized bone graft of the distal radius. New surgical technique

Introducción: Se presenta un nuevo procedimiento quirúrgico, basado en un injerto óseo vascularizado del radio distal para la seudoartrosis recalcitrante del húmero distal. Se evalúan retrospectivamente los resultados de este procedimiento en 7 pacientes en un período de 6 años. Materiales y métodos: La edad promedio de los 7 pacientes fue de 51 años (r: 43-71), antes del último procedimiento quirúrgico tenían un promedio de 11 cirugías (entre 6 y 35). Dos eran varones y 5, mujeres. El seguimiento fue de 16 meses, promedio (r: 9-21). Seis de las fracturas iniciales fueron abiertas y una, cerrada. Los trazos iniciales de las fracturas fueron oblicuas cortas, metafisariasdistales en 3 casos, supraintercondíleas en 2 casosy en los restantes no se pudo registrar la fractura inicial. En todos los casos hubo antecedentes de infección. Cuatro pacientes tenían antecedentes de afectación del nervio radial. Todas las seudoartrosis, con independencia de su trazo, fueron inestables.Resultados: El seguimiento promedio fue de 16 meses(r: 9 y 21 m). Hubo una paresia radial que se recuperó antes de la consolidación ósea. Esta última varió entre 15 y 21 semanas (p: 17 s). La amplitud del movimiento promedio del codo fue de 76,4º, la extensión promedio fuede -32,8º y la flexión promedio, de 106,4º. La morbilidadpromedio antes de la última cirugía fue de 4 años.Conclusiones: El injerto óseo vascularizado pediculadodel radio distal debe considerarse una alternativa frente a fracasos consecutivos de la cirugía convencional en pacientes multioperados. El deterioro no sólo abarca la calidad ósea, las partes blandas y las articulaciones vecinas, sino también a los pacientes habitualmente deprimidos. La correcta planificación preoperatoria, así como un conocimiento experto de la anatomía, es obligatoria para la ejecución del procedimiento quirúrgico. Los resultados favorables obtenidos en esta corta serie de pacientes sonalentadores, pero no concluyentes.