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Anatomy and Physiology Assignment One A common case study involves a client complaining of a shoulder or knee joint problem, which is restricting the persons’ movement and causing a considerable degree of discomfort and pain. Knee Joint Define the movements, which occur at the joint. The knee joint is the largest and most complex joint in the body. It allows extension, flexion and some rotation. During knee extension, the wheel-shape femoral condyles travel like ball bearings across the flat condyles of the tibia until tension in the anterior cruciate ligament restricts further movement. This forward movement has two components that occur simultaneously. It begins with the femur sliding posteriorly on the posterior aspect of its condyles. Then as the femur begins to erect, its condyles roll forward, bringing them into full contact with the menisci. Finally because the lateral femoral condyle stops rolling before the medial condyle stops, the femur rotates medially on the tibia, which effectively ‘locks’ the joint into a rigid structure that can support our body weight. When the joint is fully extended, all major ligaments of the knee are twisted and taut and the menisci are compressed. For flexion to o