Review of mcl injuries introduction One of the more prominent injuries affecting the 2025 NFL playoffs was an injury that occurred during a game on December 15.
Review of mcl injuries introduction One of the more prominent injuries affecting the 2025 NFL playoffs was an injury that occurred during a game on December 15. David Montgomery, one of the running backs for the Detroit Lions suffered an injury to his medial collateral ligament, or MCL. Initial reports stated he would require surgery, but after multiple opinions, he decided to try to do physical rehabilitation and try to return for the playoffs.
One of the primary ligamentous structures of the knee, the medial collateral ligament (MCL) , extends from the distal femur to proximal tibia, comprises superficial (sMCL) and deep (dMCL) bundles. Commonly described in conjunction with the posterior oblique ligament (POL), the MCL’s primary function is stabilizing for valgus stress as well as external tibial rotation throughout the arc of motion. It is the most frequently injured of the knee ligaments, accounting for approximately 0.24 per 1,000 cases a year, comprising a majority of high school athletic knee injuries.
The MCL has two insertions on the tibia: the proximal division attaches 12mm distal to the plateau articular surface, and the distal division inserts on a point 6 cm distal to the joint line. Recent studies pointed out that the proximal division is the primary knee stabilizer against valgus stress, while the distal division is a primary stabilizer against both internal and external rotation moments. In other words, the proximal and distal divisions of the sMCL perform different roles in knee stabilization.
Abbreviations: AMT: Adductor Magnus tendon, AT: adductor tubercle, MPFL: medial patellofemoral ligament, ME: medial epicondyle, sMCL: superficial MCL, POL: posterior oblique ligament, GT: gastrocnemius tubercle, MG: medial head of the gastrocnemius muscle. The deep part of the MCL (dMCL) is the thick part of the middle third of the medial knee capsule. It has two arms: meniscofemoral and meniscotibial, and attaches the medial meniscus to the joint capsule.
The structures of the medial knee posterior to the MCL are known as the posteromedial corner (PMC). They are another important stabilizer of the medial knee and consist of posterior oblique ligament (POL), semimembranous insertion, oblique popliteal ligament (OPL), medial joint capsule, and posterior horn of the medial meniscus. POL is a capsular thickening of the knee joint attaching to the semimembranosus muscle.
If you are experiencing symptoms that may be related to mcl injuries, it is important to see a sports medicine physician. Early evaluation and treatment typically lead to better outcomes. Do not ignore pain or symptoms that are limiting your activity.
*This article is for educational purposes only and does not substitute for professional medical advice. Always consult a qualified healthcare provider.*
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