mapskerop.blogg.se - Mcmurray meniscus test sensitivity

Mc Murray’s test is valuable in getting approval for performing an MRI. MRI is sensitive and it identifies associated injury. Other clinical test like MRI is used to confirm the diagnosis of meniscal tear. To test the lateral meniscus, the examiner passively internally rotates the tibia and places a varus force and then knee is extended.Ī positive test is indicated by pain ,clicking or popping within the knee joint and may signal a tear of either the medial or lateral meniscus when the knee is brought from flexion to extension. The knee is then extended in order to test the medial meniscus.

( Table II ) demonstrates the diagnostic parameters based on the results of knee arthroscopy. 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 most sensitive test for lateral meniscus tears was combined tests with 68.8 sensitivity, while McMurray test had highest specificity (83). The examiner then grasp the patient’s heel with one hand and places the other hand over the knee joint. Patient should be lying supine with knee hyperflexed. Mc Murray’s test uses the tibia to trap the meniscus between the femoral condyles of the femur and tibia. 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 of knee.

Pain at higher level than the joint is usually associated with medial collateral ligament tear.pain at the lower level is usually associated with the pes anserine bursitis.

Possible extension lag (locked knee),due to displaced bucket handle tear of the meniscus.

It can be on the medial side (medial meniscal tear ),or on the lateral side (lateral meniscal tear).

Joint line tenderness is the most sensitive finding.

When patient sustains an injury of knee and has a meniscal tear, usually the patient complaints of knee pain localized to the medial or lateral side of the knee.The patient also have locking and clicking. This test is a rotational maneuver of the knee that is frequently used in the examination of the patient in the diagnosis of meniscal tears. The McMurray test is named after Thomas Porter McMurray, a British orthopedic surgeon from the late nineteenth and early twentieth century.Courtesy: Prof Nabil Ebraheim, University of Toledo, Ohio, USAĬommonly used test in orthopaedic examination to test for tear of the meniscus. The test therefore seems to be of limited value in current clinical practice. The clinical test had a sensitivity of 58.5%, a specificity of 93.4%, and the predictive value of a positive result was 82.6%. In a recent study, clinical test results were compared with arthroscopic and/or arthrotomy findings as reference. The other leg must also be checked for completeness because clicks can arise from normal tendon movement.Īccording to some sources, the sensitivity of the McMurray test for medial meniscus tears is 53% and the specificity is 59%. A positive test indicates a tear of the lateral meniscus.

A tag, caused by a tear will cause a palpable or even audible click on extension of the knee.

Likewise the medial knee can be stablized and the leg internally rotated as the leg is extended. With arthroscopy, Thessaly was the most sensitive for medial meniscus (76.6), while McMurray and joint-line tenderness were more specific (81.0, and 81.0). If pain or a "click" is felt, this constitutes a "positive McMurray test" for a tear in the medial meniscus. For lateral meniscus tears, McMurray was the most sensitive (56.2) and all were specific (McMurray 89.6, Thessaly 88.4, joint-line tenderness 90.2). The other hand rotates the leg externally while extending the knee. The examiner then places one hand on the lateral side of the knee to stabilize the joint and provide a valgus stress. To perform the test, the knee is held by one hand, which is placed along the joint line, and flexed to ninety degrees while the foot is held by the sole with the other hand. A tear in the meniscus may cause a pedunculated tag of the meniscus which may become jammed between the joint surfaces. It is a rotation test for demonstrating torn cartilage of the knee. The McMurray test, also known as the McMurray circumduction test is used to evaluate individuals for tears in the meniscus of the knee.