Normally, the bones, ligaments, and muscles of a joint work together to support the various parts of the joint in their correct positions while also allowing the full range of motion of the joint.
In joint instability, there is lack of support, with the result that the joint may not move correctly or may be dislocated easily.
In shoulder instability, for example, the shoulder joint feels abnormally loose, and there may also be symptoms such as tingling, numbness, or weakness in the arm. In extreme cases, the shoulder may dislocate.
Treatment may involve physical therapy and anti-inflammatory medication or surgery to stabilize or repair the joint. If the joint has dislocated, it will need to be manipulated back into position.

Othere related diseases

CERVICAL SPONDYLOSIS
Cervical spondylosis is the medical term for osteoarthritis of the neck. In this disorder, the cervical vertebrae thicken, bony outgrowths develop on the verteb...

CHARLEY HORSE
A charley horse is the bruising of the quadriceps muscles at the front of the thigh due to a blow that crushes the muscles against the underlying femur (thigh b...

COCCYDYNIA
Coccydynia is severe, sharp pain in the coccyx (tailbone), the small triangular bone at the base of the spine. It may result from an injury (for example, due to...

COMPARTMENT SYNDROME
Compartment syndrome occurs when excessive pressure builds up within an enclosed group of muscles (called a compartment), usually as a result of bleeding or inf...

DISLOCATED JOINT
In a joint dislocation, the bones of a joint become displaced, usually as a result of injury. A dislocation is often accompanied by tearing of the joint ligamen...

DUPUYTRENS CONTRACTURE
In Dupuytren’s contracture, the fibrous tissue in the palm of the hand becomes thickened and forms lumps (nodules) under the skin. The nodules form cords of t...

Ewing's sarcoma