The Med Specs Gripper™ Hinged Knee brace aids in the treatment of MCL and LCL sprains. In addition, it may be used post-operatively or during sports to provide medial or lateral stability and to protect against hyperextension. Skinloc™ material lining the inside of the brace grips the proximal end of the calf (gastrocnemius) muscle to prevent the brace from sliding down the leg. The wrap-around design with anterior closure allows for ease of application and an optimal fit. For sizing, measure the circumference of the knee at mid patella.