Tendinitis causes irritation and inflammation of one or more tendons - the thick, fibrous tissues that attach muscles to bones. Some knee injuries cause inflammation in the bursae, the small sacs of fluid that cushion the outside of your knee joint so that tendons and ligaments glide smoothly over the joint. It can be torn if you suddenly twist your knee while bearing weight on it. The meniscus is the tough, rubbery cartilage that acts as a shock absorber between your shinbone and thighbone. Also, people whose bones have been weakened by osteoporosis can sometimes sustain a knee fracture simply by stepping wrong. The bones of the knee, including the kneecap (patella), can be broken during falls or auto accidents. An ACL injury is particularly common in people who play basketball, soccer or other sports that require sudden changes in direction. An ACL injury is a tear of the anterior cruciate ligament (ACL) - one of four ligaments that connect your shinbone to your thighbone. Some of the more common knee injuries include: It can be torn if you suddenly twist your knee while bearing weight on it.Ī knee injury can affect any of the ligaments, tendons or fluid-filled sacs (bursae) that surround your knee joint as well as the bones, cartilage and ligaments that form the joint itself. The meniscus is a C-shaped piece of tough, rubbery cartilage that acts as a shock absorber between the shinbone and the thighbone.
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