To strengthen the muscles that stabilize the shoulder
a. Lie on your back with your arms resting at your sides.
b. Keep your elbow straight, lift your affected arm to shoulder level with your hand pointing to the ceiling.
c. Raise your hand toward the ceiling, lifting your shoulder blade from the floor.
d. Hold for three to five seconds, and then relax, allowing your shoulder blade to return to the floor.
e. Slowly repeat the reaching motion several times.
f. Lower your arm to rest by your side.