Patients can often compensate for loose ligaments by increasing the strength and control of the rotator cuff and shoulder blade muscles. These muscle groups help pull the humeral head into the glenoid and will pull more tightly if they are strong.
Typical rehabilitation programs start with a short period of immobilization with a sling and then progress to exercises like closed grip pulldowns, rowing on a machine and shrugs, for shoulder blade strength.
Strengthening programs for the rotator cuff include rotation exercises with the arm down at the side. Resistant rubber tubing or cables may be used.
Exercises that increase coordination of the shoulder are also important and these include exercises with a medicine ball, and bouncing balls against the wall and the floor.
Source: American Orthopaedic Society for Sports Medicine
