The ZK-X from Zamst is a performance-driven, extra-strong knee brace that is indicated for use for moderate to severe sprains of the ACL, MCL, and LCL, as well as for preventive measures. The brace has a semi-open design for fit and slipping prevention. Crisscrossed and parallel straps provide effective compression and increase anterior stability to the lower leg. The unique lateral and medial hinged support system provides additional reinforcement to the knee joint, improving medial and lateral stability while enabling smooth flexion and extension. Adjustment straps on top/front and lower/rear help lock the brace in place.