Congenital synchondroses in the ischial bones.

Abstract

In this paper, a 39-year-old woman is presented with congenital, symmetrically bilateral synchondroses in the bodies of the ischial bones, which presumably occurred due to extension of two separate primary ossification centers which failed to fuse, instead of a usual single primary ossification center. To the best of the author's knowledge, such an anomaly has not been reported previously in the ischial bones. The apparent clinical significance of these synchondroses was development of degenerative changes about them, which was associated with moderate hip pain in the absence of degenerative hip-joint disease.