[Combined total endoprosthesis implantation in bilateral femoral neck fracture with osteogenesis imperfecta tarda].

Osteogenesis imperfecta tarda is a hereditary disease with an insufficiency of osteoblasts caused by a collagen disorder, insufficient formation of osteoid and an impediment of periosteal bone formation. This leads to increased fragility of the bones and, as a consequence, to the risk of fractures. We report a simultaneous, bilateral medial femoral neck fracture, caused by a cerebral cramp attack. The patient is 80 years old and suffers from osteogenesis imperfecta tarda and Parkinson's disease. We implanted a cemented total endoprosthesis on each side in just one operation. There were no complications in the intra- and postoperative course. A walking aid gradually increased the patient's mobility so that he could be discharged on the 21st postoperative day.