The shallow ball-and-socket joint of the shoulder is the most frequently dislocated major joint in the human body. Most often, the shoulder dislocates as the upper arm bone (humerus) comes forward out of the joint.
Replacing the shoulder back into position and immobilizing it in a sling for a few weeks is the most common treatment. Occasionally surgery may be needed to relocate the joint. Sometimes, a tendency to experience further dislocation. This problem is known as unstable shoulder.
If non-operative treatment in the form of muscle strengthening exercise fails, arthroscopic surgery in early cases and open surgery in late cases is recommended to stabilize the shoulder. Open technique involves transferring of a bone fragment to the deficient glenoid rim- latarjet procedure.