DEAR DOCTOR K: I have pain in my shoulder when I raise my arm above my head. My doctor says it's caused by "impingement." What does that mean, and what can I do about it?
DEAR READER: You know the wide variety of things your shoulder allows you to do -- such as reach for a box of cereal, swing a golf club and wash your hair. Its wide range of motion makes all these things possible. However, the design of a joint that lets you do all of that also leaves the joint vulnerable to injury. Joints are places where two or more bones meet. The shoulder joint is where three bones meet: the clavicle (collarbone), the scapula (shoulder blade) and the humerus (upper arm bone).