How Do Doctors Diagnose MCL Injuries?
Published: Dec 28, 2023
Diagnosing an MCL injury involves a detailed physical exam and sometimes imaging tests. Understanding these procedures can help patients know what to expect during diagnosis.
Contents
Initial Physical Examination
Doctors assess an MCL injury by examining the knee soon after the injury occurs. They look for swelling, bruising, and any difficulty bearing weight. They also compare the injured knee with the uninjured one to check for differences.
Special Tests for MCL Injury
A key test is the valgus stress test, where the doctor applies pressure to the knee to check for joint laxity. The Lachman test might also be used to evaluate the ACL since MCL injuries often occur with ACL injuries. These tests help determine the severity of the injury.

When to Use Imaging
Imaging like X-rays or MRIs can be used if a severe injury is suspected or if multiple ligaments might be affected. MRIs give a detailed view of the knee's soft tissues and can help plan treatment if surgery is a consideration.
Frequently Asked Questions
It's a test to check knee joint laxity by applying pressure to the knee.
Not always; MRIs are used for severe injuries or when other injuries are suspected.
Comparing both knees helps identify differences caused by the injury.
Yes, bruising is a common symptom of MCL injuries.
Key Takeaways
Proper diagnosis of MCL injuries guides effective treatment and recovery.
Wondering if you should get your knee checked? Talk to Doctronic today!Related Articles
References
Shepherd L, Abdollahi K, Lee J, Vangsness CT Jr. The prevalence of soft tissue injuries in nonoperative tibial plateau fractures as determined by magnetic resonance imaging. J Orthop Trauma 2002; 16:628.
Kurzweil PR, Kelley ST. Physical examination and imaging of the medial collateral ligament and posteromedial corner of the knee. Sports Med Arthrosc 2006; 14:67.
Always discuss health information with your healthcare provider.