Custom Total Hip Arthroplasty with Image-Free Screw Removing Assisted by CT Based Navigation: A Case Report

It is a huge stress that remaining screws in the bone cannot be seen from the bone surface to remove the screw with fluoroscopy. Sometimes 2D fluoroscopy technique is difficult to remove hidden screws or metal pieces. To seek the hidden screw, skin incision, cortical bone loss and weakness of the long bone shaft will be increased. No case of total hip arthroplasty with screw removing assisted only CT based navigation was reported. We experienced such rare case first in the world. 77years old woman complained her left hip pain. Another surgeon had done femoral neck abduction osteotomy in 1989. A Broken screw was remained covering the cortical bone at the shaft of femur. We planned total hip arthroplasty with custom stem and screw removal, assisted by CT based navigation. In total hip arthroplasty, there were some issues that increased bone breaking and infection risks with the use of fluoroscopy. It seems that THA with screw removing assisted CT based navigation is a valuable method. Citation: Nobuyuki Watanabe., et al. “Custom Total Hip Arthroplasty with Image-Free Screw Removing Assisted by CT Based Navigation: A Case Report”. EC Orthopaedic 3.2 (2016): 277-282.