The mechanism of “killer turn” causing residual laxity after transtibial …

Background: The residual laxity after transtibial posterior cruciate ligament (PCL) reconstruction has been reported by several authors. The sharp angle where the graft exits the tibial tunnel, which is known as “killer turn”, is believed to be the main reason. The purpose of this study was to reveal the mechanism of “killer turn” and its effect on both graft and tunnel inlet. Methods:…