Stress fracture of the ulna in a professional tennis player using a double-handed backhand stroke.

Stress fractures of the ulna are uncommon injuries, but they have been reported in athletes from various sports. In tennis players stress fractures of the ulna are described exclusively in the nondominant forearm of athletes using a two-handed backhand stroke. We report such a case in a 24-year-old tennis player, with special emphasis on diagnostic imaging, accurate grading of the injury, and specific treatment recommendations.