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Lateral meniscus root avulsion with anterior cruciate ligament tear: A case report and surgical technique

Lateral meniscus root (LMR) injuries associated with anterior cruciate ligament (ACL) tears are less frequent than medial meniscus root (MMR) injuries. Among the reported cases of lateral meniscus injuries associated with an ACL tear, those involving the posterior horn are most frequent, followed by LMR tear; however, LMR avulsion is a very rare condition, and its incidence is still unknown. Injuries that involve detachment of the meniscus root attachments profoundly affect the meniscal biomechanics and kinematics and can accelerate degenerative changes within the knee joint. Thus, it is imperative to accurately and concisely identify such lesions to guide treatment and surgical decision-making and help determine prognosis. We report a rare case of a male athlete with an LMR avulsion associated with an ACL tear; this condition was surgically treated with ACL reconstruction and in situ pull-out suture repair.