Abstract
K. S., a fourteen-years-old boy Y. I., a thirteen-yeas-old boy had suddenly felt severe pain in the right groin while running at high speed. Both of them could walk without assistance, but with limping.
Roentgenologic examinations of their pelvic bones disclosed fractures of the anterior inferior spine of the right ilium, respectively. This small fragments displaced inferiorly, and slightly laterally and the shapes were almost the same as ones of apophysis of the opposite iliums. Therefore the lesions were considered to be avulsion fractures of non-fured apophysis in adolescent.
Surgical treatment was performed on both patients. A bony mass attached to the direct head of the rectus fernoris separated from the iliac bone. The fragments were reset by a screw.
The symptoms subsided completely several weeks after the operations.
Although we have only come across about 30 cases of this fracture in medical literature of Japan, it may be more common than those reported. One of the reasons may be that they do not come under medical care due to the fact that the symptoms are relatively slight.
