Pathologic Fracture of Femoral Neck in a Patient with Tumoral Calcinosis.

Tumoral calcinosis is a rare disease characterized by massive subcutaneous soft tissue deposits of calcium phosphate around large joints in patients with chronic kidney disease. Invasion of bone by tumoral calcinosis is rare. We experienced a case involving a femoral neck pathologic fracture due to bony invasion of tumoral calcinosis in a 46-year-old female with chronic kidney disease who had been on dialysis for 15 years. Successful outcomes were obtained by performance of total hip arthroplasty for treatment of the pathologic fracture of the femoral neck. Careful precaution is necessary to prevent pathologic fractures in patients with tumoral calcinosis around the hip joint.