Good functional results with open reduction and internal fixation for locked posterior shoulder fracture-dislocation: a case series.

BACKGROUND: There is no standardized therapeutic strategy for locked posterior shoulder fracture-dislocation (PSFD), and no consensus exists on the analysis of preoperative factors. This retrospective study aimed to evaluate functional results and complications in a series of PSFD cases managed with open surgical treatment. METHODS: Patients diagnosed with locked PSFD who underwent open surgical treatment with reduction and osteosynthesis between April 2016 and March 2020 were included. All participants were treated with open reduction and internal fixation. Functional assessment used the modified University of California, Los Angeles (UCLA) mod scale, American Shoulder and Elbow Surgeons (ASES) questionnaire, subjective shoulder value (SSV), and visual analog scale (VAS). Complications were evaluated clinically and radiologically by X-ray and computed tomography. RESULTS: Twelve shoulders were included (11 patients; mean age, 40.6 years; range, 19- 62 years). The mean follow-up duration was 23.3 months (range, 12-63 months). The UCLA mod, ASES, SSV, and VAS scores were 29.1±3.7, 81.6±13.5, 78±14.8, and 1.2±1.4 points, respectively. The overall complication rate was 16.6%, with one case of post-traumatic stiffness, 1 case of chronic pain, and no cases of avascular necrosis. CONCLUSIONS: Open surgical treatment of locked PSFD can achieve good functional results. A correct understanding of these injuries and good preoperative planning helped us to achieve a low rate of complications.

Luxación posterior inveterada de hombro asociada a lesión de Hill-Sachs reversa tratada con modificación de la técnica de McLaughlin / Unreduced posterior dislocation of the shoulder with an associated reverse Hill-Sachs injury treated with a modified McLaughlin technique

Resumen: Introducción: Las luxaciones posteriores de hombro son raras (2%) y se asocian a convulsiones, electrocuciones y traumatismos de alta energía. Pueden presentarse asociadas a una lesión de Hill Sachs reversa. Uno de los principios del tratamiento consiste en la transferencia del tendón subescapular hacia el área de lesión o procedimiento de McLaughlin. Caso clínico: Se expone el caso de un masculino con un defecto de Hill-Sachs reverso tratado con una modificación de la técnica original de McLaughlin. Se reportan los resultados funcionales tras 13 meses de la cirugía. Resultados: Actualmente con un Constant Score de 98 puntos. Discusión: La modificación técnica empleada para el tratamiento quirúrgico de la lesión de Hill Sachs reversa presentada en este paciente demostró bueos resultados funcionales con material de bajo costo.

Abstract: Introduction: Posterior shoulder dislocations are rare (2%) and are associated with seizures, electrocutions and high-energy trauma. They may be associated with a reverse Hill-Sachs lesion. One of the treatment principles consists of the subscapular tendon transfer to the injury area or McLaughlin procedure. Clinical case: A case of a man with a reverse Hill-Sachs defect treated with a modification of McLaughlin's original technique is presented. The functional results after 13 months of surgery are reported. Results: Currently with a Constant Score of 98 points. Conclusion: The technical modification used for the surgical treatment of the reverse Hill-Sachs lesion presented in this patient demonstrated good functional results with low cost material.

[Unreduced posterior dislocation of the shoulder with an associated reverse Hill-Sachs injury treated with a modified McLaughlin technique]. / Luxación posterior inveterada de hombro asociada a lesión de Hill-Sachs reversa tratada con modificación de la técnica de McLaughlin.

INTRODUCTION: Posterior shoulder dislocations are rare (2%) and are associated with seizures, electrocutions and high-energy trauma. They may be associated with a reverse Hill-Sachs lesion. One of the treatment principles consists of the subscapular tendon transfer to the injury area or McLaughlin procedure. CLINICAL CASE: A case of a man with a reverse Hill-Sachs defect treated with a modification of McLaughlins original technique is presented. The functional results after 13 months of surgery are reported. RESULTS: Currently with a Constant Score of 98 points. CONCLUSION: The technical modification used for the surgical treatment of the reverse Hill-Sachs lesion presented in this patient demonstrated good functional results with low cost material.

INTRODUCCIÓN: Las luxaciones posteriores de hombro son raras (2%) y se asocian a convulsiones, electrocuciones y traumatismos de alta energía. Pueden presentarse asociadas a una lesión de Hill Sachs reversa. Uno de los principios del tratamiento consiste en la transferencia del tendón subescapular hacia el área de lesión o procedimiento de McLaughlin. CASO CLÍNICO: Se expone el caso de un masculino con un defecto de Hill-Sachs reverso tratado con una modificación de la técnica original de McLaughlin. Se reportan los resultados funcionales tras 13 meses de la cirugía. RESULTADOS: Actualmente con un Constant Score de 98 puntos. DISCUSIÓN: La modificación técnica empleada para el tratamiento quirúrgico de la lesión de Hill Sachs reversa presentada en este paciente demostró bueos resultados funcionales con material de bajo costo.

LESIONES DE Mc LAUGHLIN Y BANKART INVERTIDA TRAS LUXACION POSTERIOR DE LA ARTICULACION ESCAPULOHUMERAL ASOCIADA A FRACTURA DIAFISARIA DE HUMERO: CASO CLINICO

Presentamos el caso de un paciente masculino de 53 años de edad que luego de recibir un trauma en el hombro izquierdo, acude a nuestro Servicio, con dolor intenso, deformidad e incapacidad funcional absoluta de ese miembro. Se diagnostica una luxación glenohumeral posterior, asociada a fractura diafisaria de húmero. Se realiza reducción cerrada de la luxación y fijación interna con lámina AO de la fractura diafisaria. Luego de la reducción, los estudios imagenológicos mostraron una fractura del aspecto anterointerno de la cabeza humeral (lesión de Mc Laughlin) y fractura del reborde glenoideo posterior (lesión de Bankart invertida). Se mantiene tratamiento conservador a pesar de la magnitud del daño articular y se obtienen resultados funcionales satisfactorios. Se discuten además las posibles opciones de tratamiento.

We report a case of a 53 years old male who received a trauma in his left shoulder. He came to our Service whit intensive pain, deformity and absolute funcional incapacity in his left upper limb. We diagnose a posterior glenohumeral dislocation associated to an humeral shaft fracture. A closed reduction for the dislocation and an open internal fixation whit ASIF plate for the shaft fracture were performed. Before the reduction of the dislocation image study showed a fracture on the postero-internal side of the humeral head (Mc Laughlin lesion) and a fracture on the posterior glenoid rim (reversed Bankart lesion). We maintained non surgical treatment for the dislocation and we obtained funcional satisfactory result. We discussed beside, others possible options of treatment.