Description
Objectives: Medial meniscus ramp lesion (MMRL), lateral meniscus posterior root tear (LMPRT), and anterolateral complex injury (ALCI) are specific injuries to anterior cruciate ligament (ACL) injury and each injury is regarded as secondary stabilizer of ACL. However, the effects of this combination on knee stability remain unknown. This case-control study aimed to investigate the effect of the number of concomitant secondary stabilizer injuries on knee instability in patients undergoing ACL reconstruction.
This study showed that as the number of the secondary stabilizer injuries increase, rotatory instability in ACL-deficient knee was increased. In other words, patients with a high-grade pivot shift had an increased probability of concomitant secondary stabilizer injury. Patients with severe preoperative rotational instability should be treated for potential secondary stability injury.
