A) Normal. B) Involved, with fragmentation of the ossification center. C) Enlargement shows how the ossicle pulls away from the anterior portion of the main tuberosity ossification center. The region of separation then fills in with fibrous and fibrocartilaginous tissue, which usually ossifies only if the tension stress is relieved.
Reproduced with permission from: Ogden, J. Skeletal Injury in the Child, 3rd ed, Springer-Verlag, New York 2000. p.1018.
