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Case 42 Discussion

Legg-Calve-Perthes disease. The etiology is thought to be vascular insufficiency. It occurs between ages 4 and 8 with a distinct male predominance. The condition is bilateral in about 10% of cases, with the hips involved sequentially, not simultaneously. If there is bilateral,symmetric involvement, then other etiologies should be considered. This list would include hypothyroidism, sickle cell anemia, Gaucher's disease, infection, eosinophilic granuloma, hemophilia and Meyer's dysplasia. The latter entity can look much like LCP, but generally is seen around age 2, often bilateral and symmetric, with the fragmented epiphysis growing and finally fusing into normal appearing epiphyses. LCP is rare in blacks. (44.443)

Resnick. Bone and Joint Imaging. WB Saunders, 1989, pp980-985.

Case 43

General Radiology Cases