The OPROtec Knee Brace with Metal Hinges is the sturdiest of all OPROtec Knee Supports, with dual-pivot hinges to provide added support and stability to the knee joint following a serious knee injury like anterior cruciate ligament (ACL) ruptures and ligament sprains.Designed for either the right or left leg, the soft neoprene support can be used to improve knee stability following medial or lateral knee ligament injuries, and be used for a range of activities such as running, football, hockey, rugby and for anyone looking for a strong sturdy knee brace for skiing.