Complications
A calcification that develops adjacent to the adductor tubercle. This complication results from a nonhealing collateral ligament injury (usually >6 weeks old). Pellegrini-Stieda disease will be visible on anteroposterior x-rays.
The likelihood of developing stiffness in the knee joint after acute injury is much higher if no physical therapy is employed. Range of motion exercises dramatically reduce the incidence.
Persistent valgus instability can occur after acute MCL injury if the ligament has not adequately healed. The incidence of chronic MCL injury is higher after multiligament injuries and MCL/anterior cruciate ligament combined injuries. Chronic MCL injuries usually need operative repair. Referral to an orthopedic specialist is recommended.
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