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According to some sources, the sensitivity of the McMurray test for medial meniscus tears is 53% and the specificity is 59%. In a recent study, clinical test results were compared with arthroscopic and/or arthrotomy findings as reference. [4] The clinical test had a sensitivity of 58.5%, a specificity of 93.4%, and the predictive value of a ...
A tear of a meniscus is a rupturing of one or more of the fibrocartilage strips in the knee called menisci.When doctors and patients refer to "torn cartilage" in the knee, they actually may be referring to an injury to a meniscus at the top of one of the tibiae.
Each meniscus has an outer vascular zone (red-red zone), which has a good blood supply and healing potential as well as a central avascular zone (white-white zone), which has limited healing capability. [2] The medial meniscus is more prone to injury due to its firm attachment to the joint capsule and limited mobility.
Those with meniscal injuries may report symptoms such as clicking, catching, or locking of knees. Apart from joint line tenderness, there are three other methods of accessing meniscus tear: the McMurray test, the Thessaly test, and the Apley grind test. In McMurray test, the person should lie down in supine position with the knee should in 90 ...
Diagnosis of lateral meniscus tear is done with McMurray's test. If a tear is detected, treatment depends on the type and size of the tear. Small tears can be treated conservatively, with rest, ice, and pain medications until the pain is under control, then exercise may be started with gradually increasing intensity, to improve range of motion ...
In order to perform the test, the patient lies prone (face-down) on an examination table and flexes their knee to a ninety degree angle. The examiner then places his or her own knee across the posterior aspect of the patient's thigh. The tibia is then compressed onto the knee joint while being externally rotated. If this maneuver produces pain ...
Healing of the medial meniscus is generally not possible unless the patient is very young, usually <15 years old. Damage to the outer third of the meniscus has the best healing potential because of the blood supply, but the inner two thirds of the medial meniscus has a limited blood supply and thus limited healing ability.
If the tibia's position on the femur reduces as the knee is flexed in the range of 30 to 40 degrees or if there is an anterior subluxation felt during extension the test is positive for instability. Pivot-shift is not straightforward to perform. For many with instability, the reproduction of instability is unpleasant and 'visceral'.
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