Biomechanical evaluation of three different fixation methods of the Chevron osteotomy of the olecranon: an analysis with Roentgen Stereophotogrammatic Analysis.

Background: In this study three different methods for fixating the Chevron osteotomy of the olecranon are evaluated. Transcortical fixed Kirschner wires with a tension band, a large cancellous screw with a tension band, and a large cancellous screw alone are compared using Roentgen Stereophotogrammatic Analysis (RSA).

Methods: The different fixation methods were tested in 17 cadaver specimens by applying increasing repetitive force to the triceps tendon.

Treatment of scaphoid non-union with a percutaneous corticocancellous bone graft.

Thirty-three symptomatic scaphoid non-unions were treated by a simple, minimally invasive procedure using a percutaneous autologous corticocancellous bone graft. After an average follow-up of 3.5 years, union was observed in 29 cases.