• Medicine · Dec 2019

    Case Reports

    Avulsion of the femoral attachment of the medial collateral ligament in the setting of knee multiligament injury: A case report.

    • Deming Guo, Haichi Yu, Bingzhe Huang, Xue Gao, Yanguo Qin, and Xiaoning Liu.
    • Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.
    • Medicine (Baltimore). 2019 Dec 1; 98 (50): e18376e18376.

    RationaleMedial collateral ligament (MCL) injury is a common sports injury. The damage mainly occurs in ligament fibers, but MCL avulsion fracture is extremely rare and only a few reports have been published.Patient ConcernsHerein, we present a healthy 21-year-old man with an avulsion fracture of the MCL of the right knee sustained during snowboarding.DiagnosisClinical and radiographic findings confirmed the presence of an avulsion fracture at the proximal attachment of the MCL, combined with complete anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) rupture.InterventionsThe patient underwent single-stage ACL, PCL reconstruction, and MCL repair.OutcomesTwo weeks after the surgery, the patient developed heterotopic ossification (HO) at the medial side of the knee, HO tended to be stable and mature at the 3-month follow-up examination. One year after the operation, the patient's knee was fully functional, stable, and pain free.LessonsFemoral attachment avulsion fracture of the MCL is in contrast to common isolated MCL injuries. Early surgical repair is advocated for the greatest benefit. Orthopedic surgeons should keep the potential complication HO in mind and develop rational strategies for HO prevention and treatment.

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