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Meniscal Function

While the term “shock absorber” has often been used to describe the meniscus, the menisci actually serve many functions in the human knee. Additional functions are theorized to be load bearing, lubrication, and proprioception. The meniscal function of load bearing may be clinically inferred by the degenerative changes that accompany meniscectomy.

Fairbank described radiographic changes […]

SPECIFIC TESTS-Medial shearing

Significance

This test is used to detect internal derangement at the inner side of the knee. Pain on jerk is suggestive for a minor lesion at the tibial insertion of the anterior cruciate ligament.

Positioning.

The subject lies in the supine position with the knee flexed to a right angle, and the heel resting […]

Posterior cruciate ligament injuries

PCL tears of the knee are not very common; they constitute only 5-10% of all major knee ligament tears.

Anatomy The PCL has an average width of 0.5 in (13 mm) and length of 1.5 in (38 mm). It is fan-shaped, being narrowest in the midportion and fanning out superiorly and, to a lesser extent, […]

Osteochondritis Dissecans of the Knee

Basics Description A pathologic joint entity of localized bone necrosis with overlying cartilage injury Osteochondritis dissecans primarily affects the knee, but it is also seen in the hip (in late Legg-Calve-Perthes disease), elbow, and ankle. Osteochondritis dissecans occurs primarily in the 2nd decade of life, but it also is seen in children and older […]

Anterior Cruciate Ligament Injury

Basics Description The ACL is critical for knee function in athletes who require knee stability in activities such as running, cutting, jumping, and kicking. The ACL originates on the posteromedial aspect of the lateral femoral condyle and inserts anterior to and between the intercondylar eminences of the tibia. The ACL is composed of 2 […]