Shoulder pain is so common that it affects up to 66% of the population at some point in life. Conditions like impingement, tendinitis and rotator cuff tears are the most common. Johns Hopkins orthopedist and shoulder expert Dr. Ed McFarland discusses what we need to know about the causes and treatments of shoulder pain. Former Baltimore Orioles baseball pitcher Tippy Martinez shares how he overcame traumatic injuries and gripping shoulder pain to perform in the 1983 World Series.