
Mechanical Properties of the Gamma Nail Fixation

In this study, we tested the mechanical properties of CCS fixation, Gamma nail fixation, and Gamma nail + CCS fixation in three trials. In the single continuous test, Gamma nail fixation was superior to CCS. However, in the cyclic load test, Gamma nail fixation was not superior to CCS fixation, and even worse than CCS fixation in the ultimate load test and showed rotation of the femoral head. This result indicates that the mechanical advantage of simple Gamma nail fixation is not as good as CCS fixation. It was prone to femoral head spin, failing internal fixation after a prolonged weight load.