The patient denied any trauma. He stated that the pain began shortly after he started intensive training for an upcoming body building competition. Plain X-ray examination was unremarkable.
Abnormal uptake is observed in the mid ulnar shaft, consistent with a stress injury.
Symptoms resolved after limitation of use of the left forearm. Ulnar stress injuries are uncommon. The exact mechanism of injury in this case is unclear. Torsional stress has been suggested as a mechanism for ulnar stress fractures in fast pitch soft-ball pitchers. Bone, exercise, and stress fractures.