orthopedic surgery orthopedic surgery

Doctors think the chronic pain of "shoulder impingement" may arise from age-related tendon and muscle degeneration, or from a bone spur that can rub against a tendon. Michele Constantini/PhotoAlto/Getty Images hide caption

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Michele Constantini/PhotoAlto/Getty Images

Popular Surgery To Ease Chronic Shoulder Pain Called Into Question

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How much is that hip implant in the X-ray? Only the hospital administrator and the company that made it know for sure. iStockphoto hide caption

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