Shoulder pain and weakness.

Abstract

An otherwise healthy 47-year-old man reported a history of right shoulder pain subsequent to an injury he sustained several months earlier while boating. The patient recalled trying to lift a heavy object out of the water when his right arm was forcibly externally rotated. The patient related that his arm was sore for several days after the injury, but his pain receded and became manageable. He did not seek medical care acutely. Months later, when he did seek care, he said that he had lost overall power in his shoulder and had generalized shoulder pain with activity. Furthermore, he could not tuck his shirt into his pants with his right arm.