On the Fatigue Life of the Anterior Cruciate Ligament during Simulated Pivot Landings
نویسندگان
چکیده
Passive collagenous structures such as rabbit medial collateral ligament exhibit fatigue behavior under cyclic loading: the larger the magnitude of repetitive loading, the fewer the number of loading cycles until failure [1]. A knowledge gap exists as to whether the human ACL might also exhibit fatigue behavior under cyclic loading. If so, this would help explain why an ACL rupture can occur during a common athletic maneuver that has been performed hundreds, if not thousands, of times before without injury. In addition, since smaller ACL cross-sectional area (CSA) and greater lateral tibial slope (LTS) increase peak ACL strain during simulated jump landings [2], might these morphological factors affect ACL fatigue life by increasing peak ACL strain? To find out, we tested the null hypotheses that landing force, gender, CSA, or LTS will not affect the number of cycles to ACL failure during repeated simulated pivot landings.
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