The mechanical stability evaluation system of tibial plateau fracture based on coefficient of variation method.

Bicondylar tibial plateau fractures are often managed with plate fixation clinically, but no unified standard for fixation mechanical stability evaluation exists. This study investigated the mechanical properties of 15 internal fixation schemes via finite element analysis, simulating three postoperative stages to acquire four key indicators: medial/lateral fracture fragment displacements, internal fixation stress, and fracture site stress shielding rate. The coefficient of variation was used to determine the objective weights of these indicators, establishing a multi-indicator integrated mechanical stability evaluation system. Results showed that medial plate fixation exhibited superior stability, providing a valuable reference for clinical selection of fixation schemes.