슬관절 굴곡시에 내측 및 외측 반월상 연골판 운동

The human knee is a complex biomechanical unit. The meniscus in the knee joint is one of the most important structures and its movement has become concerns only recently. Brantigan and Voshell first reported that lateral meniscus is reiatively more mobile than medial meniscus. Recently Thompsom and Fu using 3-dimentional MR1, reported medial meniscus moves 5.1mm in comparision to lateral meniscus moving 11.2mm with a ratio of 1:2.3. We have studied ahout the movement of the meniscus as the knee joint undergoes its motion. The authors obtained 5 knee joints frorn the men aged between 38 imd 58 years old, which were amputated above the knee because of vascular insufficiency and studied on the movements of the mectial and loteral menisci during the knee joint flexion. The steelballs with the diameter of 2mm were inserted into peripheral margins of the medial and lateral menisci and another steelballs with the diameter of 3mm were put into peripheral margins of the proximal tibia with a regular intervals. The reontgenogram were taken serially while tlexing the knee joint irom 0, 15, 3(P, 45'', 60, 90 and to l20 ancl analyzed by computer graphic method. The results were as follov s 1. Specimen A, C, D & E showed a ratio of movement, medial to lateral meniscus, 1.2: 1, 1.5: 1, l.3: 1 and 2.7: l. spectively exhibiting more mobility inlateral meniscus. But in specimen B, medial meniscus showed more mohility with ratio of1: l.3. 2. The longest distance of movement was 12mm hy the anterior horn of lateral meniscus while that of mediai meniscus was S.Smm. The shortest distance of movement was 2.8mm hy the posterior horn of lateral meniscus while that of medial meniscus was 1.9mm. 3. The average distance of movement f''or the anterior and posterior hom of lateral meniscus was 7.2mm and 5.1 mm respectively, showing more mobility in the anterior horn. The average distance of movement for the anterior and posterior horn of medial meniscus was 4.9mm and 3.6mm respectively and also anterior horn of medial meniscus was more mobile. 4. When comparing the movement of the menisci with the knee flexion, early phase of tlexion (0 - 60 ) of all specimens were more mobile than late phase of flexion(60-120 )in both menisci.