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Knee lower-limb orthoses designed for external modification of the structural and/or functional characteristics of the knee joint during static or dynamic therapeutic treatments. Orthoses used for static therapy are typically intended to unload the pressure on the knee joint and reducing its motion. They may consist of patient-worn custom-made braces or slings suspended from a bed, post, or other structure. Knee orthoses intended for dynamic therapy usually consist of prefabricated or custom-made devices typically including semi-rigid stays and straps encircling the thigh and leg, respectively, and an adjustable pivoting mechanism at the knee joint. Static therapy orthotic knee braces are intended mainly for patients with severe arthritis destruction while slings are used mainly for orthopedic traction treatments during rehabilitation after traumatic injuries. Dynamic therapy flexion/extension knee orthoses are also available and are intended to increase the range of motion and to improve the function and stability of the joint, they are mainly used after knee replacement surgery.
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