Risk Factors for Dislocation After Reverse Total Shoulder Arthroplasty: A Systematic Review and Meta-Analysis.

Instability after reverse total shoulder arthroplasty (RTSA) is a dreaded complication. Risk factors for postoperative instability are uncertain. The goal of this systematic review was to quantitatively and qualitatively analyze the risk factors for instability after RTSA.

Biomechanical stability of complex coronal plane fracture fixation of the capitellum.

Introduction: Coronal plane fractures of the distal humerus are relatively rare and can be challenging to treat due to their complexity and intra-articular nature. There is no gold standard for surgical management of these complex fractures. The purpose of this study was to compare the biomechanical stability and strength of two different internal fixation techniques for complex coronal plane fractures of the capitellum with posterior comminution.

Biomechanical stability of simple coronal shear fracture fixation of the capitellum.

Background: Coronal shear fractures of the capitellum are rare, and their surgical management is challenging, without a defined gold standard. The purpose of this study was to compare the biomechanical stability of 3 different internal fixation techniques for simple coronal shear fractures of the capitellum without posterior comminution.

Methods: Dubberley type IA fractures of the capitellum were created in 18 cadaveric elbows, which were age and sex matched to the following 3 internal fixation groups: (1) two anteroposterior cannulated headless compression screws (HCSs), (2) two anteroposterior HCSs with an additional anterior antiglide plate (antiGP), and (3) a posterolateral distal humeral locking plate (LP).