Avulsion Fracture of the Tuberosity of the Ischium

THE infrequency of an avulsion fracture due to forcible contraction of an attached muscle† attests to the fact that such a muscle, in its maximum effort, is weaker than its origin or insertion. Occasionally, however, a fracture occurs that belies the normal concept. Recently, a very common circumstance created a very unusual injury.Case ReportA 14-year-old cheerleader at a high-school football game, cavorting in front of the stands, turned a cartwheel, landing on her right leg. When she "followed through" with her left leg, placing it on the ground in the erect position, the leg gave way beneath her . . .