Suture-bridge technique for tibial avulsion fractures of the posterior cruciate ligament - a biomechanical comparison

摘要

Aims and Objectives:Tibial posterior cruciate ligament (PCL) avulsion fractures require surgical fixation in order to provide primary stability and adequate bone healing. Small fragments are common and comprise the risk to fracturing during screw fixation. Therefore, a suture-bridge configuration was developed to fixate small and multifragment fractures without the need of fragment drilling. The purpose of this study was to analyze the biomechanical properties of the suture-bridge technique compared to a well-established transtibial cortical suspension technique concerning cyclic elongation, stiffness and ultimate failure load. It was hypothesized that the suture bridge technique shows lower cyclic elongation and higher load to failure force compared to a cortical suspension button fixation.