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In 2008 the U.S. Department of Health and Human Services reported a combined total of 2,295 discharges for the principal diagnosis of tear of lateral cartilage/meniscus (836.0), tear of medial cartilage/meniscus (836.1), and tear of cartilage/meniscus (836.2). Females had a total of 53.49% discharges, while males had 45.72%.
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.
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. Large tears to the meniscus may require surgical repair or removal. In terms of a meniscus tear, the doctor can categorize the injury ...
Generally, the term "meniscus" is used to refer to the cartilage of the knee, either to the lateral or medial meniscus. Both are cartilaginous tissues that provide structural integrity to the knee when it undergoes tension and torsion. The menisci are also known as "semi-lunar" cartilages, referring to their half-moon, crescent shape.
Each meniscus have anterior and posterior horns that meet in the intercondylar area of the tibia. [13] Medial meniscus is bigger, less curved, and thinner. Its posterior horn is thicker (14mm) than the anterior horn (6mm). [13] The lateral meniscus is smaller, more curved (nearly circular), and has more uniform thickness than medial meniscus ...
Likewise, external rotation of the leg can be applied to test the posterior portion of the medial meniscus. [ 2 ] The McMurray test is named after Thomas Porter McMurray , [ 2 ] a British orthopedic surgeon from the late nineteenth and early twentieth century who was the first to describe this test.
Between these, the synovial membrane passes in front of the anterior and posterior cruciate ligaments, why these ligaments are both intracapsular and extra-articular with their tibial attachment located exactly on the cartilage margin. Both the lateral and medial meniscus are, however, located within the synovial capsule. [2]
Then there is severe, which without treatment, a piece of meniscus may come loose and drift into the joint space. Tears include longitudinal, parrot-beak, flap, bucket handle, and mixed/complex. Epidemiology. Injury to the medial meniscus is about five times greater than injury to the lateral meniscus due to its anatomical attachment to the MCL ...