The Kinematics of the Three Compartments of the Native and Partially Implanted Knee
The biomechanics of the human knee joint has been a subject of speculation since the past century. Various theories as to how the tibia, the femur, and the patella articulate with respect to each other have developed as a result of researches involving cadavers and living subjects. The importance of the insight in replaced-knee kinematics in loading and unloading conditions has been demonstrated with the relation between joint motion and postoperative knee functioning. Different methods have been applied in order to study the functional kinematics of the human knee, taking into account how muscle activation, movement, and loading condition in different activities affect joint motion and bones’ relative positions. Differences have been reported relative to the kinematic behavior of the native, osteoarthritic, and implanted knee, in particular for what concern patterns of anterior-posterior displacement of the femoral condyles relative to the tibia and axial rotation. In the present chapter, the different approaches for knee kinematics investigation have been analyzed and described in the native joint, in knees with medial osteoarthritis and with unicompartmental arthroplasty.
KeywordsKinematics Native knee Osteoarthritis UKA
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