Isolated acetabular osteoporosis in TOH in pregnancy: a case report.

Transient osteoporosis of the hip (TOH) is a rare, self-limiting syndrome characterized by hip pain in the 2nd or 3rd trimester of pregnancy. Conventional radiography shows demineralization of the femoral head. Diagnosis is confirmed by MRI scan. Over the course of a few months, the radiological abnormalities and the pain disappear spontaneously with complete resolution. We report the case of a patient with isolated acetabular involvement during pregnancy, confirmed by MRI scan, who obtained spontaneous remission of her symptoms.