Dr. Ebraheim’s educational animated video describes McMurray's Test.
Meniscal injuries are very common. The McMurray’s test is a rotational maneuver of the knee that is frequently used to aid in the diagnosis of meniscal tear. With a meniscal tear, usually, the patient complains of knee pain localized to the lateral or medial side of the knee joint. The patient will have locking, clicking, pain or effusion.
Examination: joint line tenderness is the most sensitive finding. Swelling of the knee. Possible extension lag (locked knee). Pain at a higher level is usually associated with the medial collateral ligament. Pain at a lower level is usually associated with the pes anserine bursa.
What is the McMurray’s test? McMurray’s test is a knee examination test that shows pain or a painful click as the knee is brought from flexion to extension with either internal or external rotation. The McMurray’s test uses the tibia to trap the meniscus between the femoral condyles of the femur and he tibia.
How do you perform the test?
When performing the McMurray’s test, the patient should be lying supine with the knee hyperflexed. The examiner then grasps the patient’s heel with one hand and places the other hand over the knee joint. To test the medial meniscus, the knee is fully flexed and the examiner then passively externally rotates the tibia and places a valgus force. The knee is then extended in order to test the medial meniscus. To test the lateral meniscus, the examiner passively internally rotates the tibia and places a varus force. The knee is then extended in order to test the lateral meniscus. A positive test is indicated by pain, clicking or popping within the joint and may signal a tear of either the medial or lateral meniscus when the knee is brought from flexion to extension.
How reliable is the McMurray’s test?
There are mixed reviews for the validity of this test. MRI is making the diagnosis of meniscal tear easier. MRI is very sensitive and it also excludes other associated injuries.
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Background music provided as a free download from YouTube Audio Library.
Song Title: Every Step
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