Meniscal injuries are very common. The McMurray’s tests is a rotational maneuver of the knee or the leg that is frequently used to aid in the diagnosis of meniscal tears. 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 clicking, locking, pain or effusion.
- Joint line tenderness is the most sensitive finding.
- Swelling of the knee.
- Possible extension leg ( locked knee).
Pain at a higher level of meniscal tear joint line is usually associated with the Medial Collateral Ligament. Pain at a lower level of joint line is usually associated with the pes anserine bursa.
What Is McMurray Test?
McMurray test Is a knee examination test that shows pain or a painful click at the knee is brought from flexion to extension with either internal or external rotation.
Performing the test
The Mcmurray test uses the Tibia to trap the meniscus between the femoral condyle of the Ferrum and the Tibia.
How do you perform the test?
When performing the McMurray’s test the patient to which test is done 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 to the extent, 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 in the knee.
To test the lateral meniscus, the examiner passively internally rotates the tibia and places a varus force to the knee. The knee is then extended in order to test the lateral meniscus.
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A positive test is indicated by pain in the knee, 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 the test.
- MRI is making the diagnosis of a meniscal tear easier.
- MRI is very sensitive and it also excludes other associated injuries.
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