Abstract: A brace for supporting a knee joint is disclosed which is specifically adapted to restrict lateral movement of the knee joint in addition to preventing hyperextension of the user's leg. The brace is formed by a rigid proximal member that fully covers the front and sides of the knee and extends partially over the tibia and a rigid distal member which overlaps the proximal member in the area of the knee joint while additionally extending over a portion of the upper leg of the user. The rigid members are attached together with a pair of hinge pins disposed on opposite sides of the knee with a primary pivot axis to allow bending of the knee joint. Attached to the inner surface of the proximal member is a knee pad which is used to provide a firm interface between the proximal member and the area of the knee joint. The knee brace further comprising at least two strap members attached to said shell members and extensible about the leg of the user.