Abstract: A knee brace for alleviating problems with tibia rotation and tibia desubluxation with respect to a femur of a wearer and including conventional first and second pairs of elongate braces having their respective hinges connected at their central ends and having conventional straps and harness for adjustably placing and holding the respective pairs of elongate braces and hinges at a desired attained position; characterized by the improvement comprising an anterior cuff connected with a second pair of braces below the hinges and adapted to firmly engage the leg at the inside anterior of the tibia with a padded flattened chord for preventing rotation of the tibia. In a preferred embodiment, the knee brace also includes a posterior cuff connected with the first pair of braces and adapted to engage the posterior portion of the thigh posteriorly of the femur for also preventing desubluxation of the tibia with respect to the femur.

Abstract: An improved knee brace hinge, per se, and as a part of external bracing apparatus for controlling the degree of motion permitted by a wearer's knee and including first and second pairs of elongate relatively stiff braces that resist torsion and bending loads and adapted to lie on opposite sides of the wearer's thigh and calf; harness, with or without flexible sheets, for adjustably placing and holding the respective pairs of elongate braces in a desired obtained position on respective opposite sides of the thigh and calf of the wearer with a hinge positioned correctly adjacent the wearer's knee. The improved hinge is connected with the central ends of the respective braces on each side of the wearer's knee and each hinge employs a single cam-slot operator for simulating flexural motion of a wearer's knee and a positive lock for limiting the range of the flexural motion.