Stress fracture of the humerus. A case study.

A 13-year-old male Little League pitcher sustained a displaced spiral fracture of the right midhumerus while in midpitch. Deep ache prodrome symptoms in the midhumerus at rest and during pitching occurred during the preceeding week, suggestive of a stress fracture that later completed to an overt fracture during the added stress of a forceful side-arm curve ball pitch, his specialty. Osteonal remodeling in stress fractures is discussed.