Only a professional sports knee brace can protect the meniscus. A sports knee brace is a professional knee brace that is worn when an athlete has an old knee injury, but must still play. Unlike other knee pads, these pads are strap-on pads with adjustable support straps or elastic support straps on either side of the knee to keep the knee joint from overflexing or overstretching. Excessive flexion and extension are two knee conditions that can damage the meniscus of the knee joint. In addition to the two support straps, the entire knee brace is made of high-elasticity straps that limit the front-to-back and side-to-side displacement of the knee joint, fully protecting the collateral and cruciate ligaments of the knee joint and preventing further damage to the knee joint.