LEFT LEG LATERAL and RIGHT LEG MEDIAL. LOW PROFILE, light-weight brace provides 3 points of leverage to reduce pressure inside the knee joint IDEAL FOR unilateral compartment OA knee users VALGUS AND VARUS adjustment to fit individual's alignment MEDIAL is the Inside of the knee / LATERAL is the Outside of the Knee UNIVERSAL, ONE SIZE can be fitted to the majority of patients, Left and Right Brace Available For Left Leg Lateral and Right Leg Medial. MEDIAL is the Inside of the knee / LATERAL is the Outside of the Knee. The Osteoarthritis Knee Brace is a top rated Osteoarthritis knee brace. It's popular design and functionality easily sets it apart from similar knee braces that promise proper knee unloading but just don't quit hit the mark. The Osteoarthritis Unloading knee Brace is made of an industrial grade plastic shell with neoprene wrapped breathable padding for ultra support and comfort. Available for both lateral and medial Osteoarthritis knee issues, The Osteoarthritis Unloading Knee Brace is a top seller for Osteoarthritis knee pain sufferers. MEDIAL VS. LATERAL The medial side of the knee is the inside part or side nearest to the other knee, while the lateral side of the knee faces away from the center of the body and is farthest from the other knee.