Mechanism of combined injuries of the posterior cruciate ligament and the posterolateral ligament while wake boarding.
BACKGROUND
We encountered a case involving posterior cruciate ligament (PCL) and posterolateral ligament injuries of the knee due to a noncontact injury while wake boarding. The moment of injury was recorded on a home video.


METHODS
Based on our analysis of the video, the mechanism of injury was considered to be a combination of varus stress and internal rotation of the lower leg that induced tearing of the posterolateral ligaments. Subsequently, tearing of the PCL in the midsubstance occurred due to increased flexion of the knee.
Takahashi
Toshiaki
T
Department of Orthopaedic Surgery, Kochi Medical School, Oko-cho, Nankoku, 783-8505 Kochi, Japan. takahast@kochi-ms.ac.jp
Kawazoe
Tateo
T
Yamamoto
Hiroshi
H
Kondo
Kenji
K
D000328:Adult; D001265:Athletic Injuries / Q000503:physiopathology* / Q000601:surgery; D001696:Biomechanical Phenomena; D017885:Collateral Ligaments / Q000293:injuries* / Q000601:surgery; D006801:Humans; D007718:Knee Injuries / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D016119:Posterior Cruciate Ligament / Q000293:injuries* / Q000601:surgery; D012399:Rotation