Shoulder pain includes:
Rotator cuff tendonitis, tear, impingement
A-C joint arthritis
Instability, scapular lag
Slow down the backswing to reduce stress on the shoulders.
Consider adopting a flatter swing plane to sweep the ball off the turf and reduce the change of shoulder-jolting divots.
For in-depth information, see the Shoulder Pain entry on About.com's Orthopedics site.
About the Author
Larry Foster, M.D., F.A.A.O.S., is a board-certified orthopedic surgeon who calls himself "a bad golfer, but a good golf orthopedist." Dr. Foster's enthusiasm for golf has earned him the nickname "Dr. Divot." Dr. Foster trained at Columbia University and the Hospital for Joint Diseases in New York City. He is the author of "Dr. Divot's Guide to Golf Injuries."