5 elderly women developed pubic osteolysis after spontaneous fracture of the pubic bone. Radiographs showed gradual progression of the osteolysis, followed by callus formation, and bone union after 4-5 months. Bone mineral density was low in all patients. White blood cell count, erythrocyte sedimentation rate, and C-reactive protein were normal. Urine deoxypyridinoline was high, but serum osteocalcin normal. Elderly women with spontaneous fractures and osteolysis of the pubic bone should be considered for evaluation of osteoporosis and treatment.