The medial collateral ligament (MCL) on the inner side of the knee is most often torn when there is a force that strikes the outside of the knee. The MCL attempts to resist widening of the joint and tears if the force is too great. When this happens, you face a recovery time of weeks to months, depending on the grade of the MCL tear.
Shoulder exercises can be useful in the treatment of many of the common causes of shoulder pain. These exercises are also part of the usual rehabilitation from most any shoulder surgery. Shoulder exercises should be performed under the direction of a physician to ensure the proper muscles are being targeted for your condition.
If you've ever developed a burning, aching pain in your elbow after playing too many rounds of tennis, or shooting pains and weakness in your hands after spending weeks glued to the computer while crashing on a project, you've probably experienced the early stages of repetitive stress injury (RSI).
A dislocation of the kneecap occurs when the patella comes completely out of its groove on the end of the thigh bone (femur), and comes to rest on the outside of the knee joint. Kneecap dislocations usually occur as a significant injury the first time the injury occurs, but the kneecap may dislocate much more easily thereafter.
A shoulder separation sounds like an odd injury, but in reality, it refers to the stretching or tearing of ligaments where the collarbone (clavicle) meets the shoulder blade (scapula). This intersection is also called the acromioclavicular or AC joint.