American practice of surgery : a complete system of the science and art of surgery . section of theanterior crucial, and, later, after rupture of the internal and external lateral 748 AMERICAN PRACTICE OF SURGERY. ligament. The oblique or posterior ligament of YYmslow resists this motionbut little, if at all. Flexion is limited by the contact of the soft parts. Exter-nal rotation (supination) is limited by the two lateral ligaments, and becomesmore extensive after a section or rupture of either. Internal rotation (pronation)is limited by the internal lateral and anterior crucial in combination
American practice of surgery : a complete system of the science and art of surgery . section of theanterior crucial, and, later, after rupture of the internal and external lateral 748 AMERICAN PRACTICE OF SURGERY. ligament. The oblique or posterior ligament of YYmslow resists this motionbut little, if at all. Flexion is limited by the contact of the soft parts. Exter-nal rotation (supination) is limited by the two lateral ligaments, and becomesmore extensive after a section or rupture of either. Internal rotation (pronation)is limited by the internal lateral and anterior crucial in combination, and becomesmore extensive after section or rupture of either. A slight forward slipping of thetibia on the femur is possible in external rotation, but is stopped first by theanterior crucial and later by the two lateral ligaments. A slight backward slip- Tendon of insertion of adductor magnui muscle (cut) Popliteal surface of femur Anterior crucial ligament Tendon of porliteus muscle(cut) Accessory attach of external semil cart Internal semil cartilage Posterior crucialligament. Groove on tibia for tendonof popliteus muscleSuperior portion of cap-sule of superior tibio-fibular articulationExternal lateral ligamentof knee-joint Posterior superior tibio-fibular ligament Tendon of semi-mem branosusmuscle (cut)Internal lateral ligament Popliteal surface of tibia Head of fibula Fig. 306.—The Knee Joint Opened from Behind by the Removal of the Posterior Ligament. (FromCunninghams Textbook of Anatomy.) ping of the tibia on the femur is also possible in external rotation, but is limitedfirst by the posterior crucial and later by the two lateral ligaments. Adduction and abduction are also possible in external rotation to a degreewhich can be felt with the hand on the joint. Adduction is limited first bythe external lateral ligament, and later by the posterior crucial. It is also in-creased on the cadaver after removal of the internal semilunar. Abduction islimited first by the inter
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