Total hip arthroplasty, Osteopetrosis, Revision surgery, Custom triflange acetabular component (CTAC), Case report, Diseases of the musculoskeletal system, RC925-935

Abstract Osteopetrosis, also recognized as marble bone disease, denotes a rare hereditary skeletal condition. It is distinguished by faulty osteoclast resorption, resulting in universally rigid and brittle bones. Secondary osteoarthritis often occurs in young and middle-aged patients with osteopetrosis. They often have to have joint replacement surgery at a young age, which means they will likely face multiple revision surgeries. To draw attention to revision surgery, we present the case of an osteopetrosis patient who underwent multiple revision surgeries after total hip arthroplasty. Additionally, we suggest that this may be the first reported case of revision surgery utilizing a custom triflange acetabular component (CTAC) in a patient with osteopetrosis. These findings will offer valuable insights for selecting appropriate techniques and instruments for multiple revision surgeries of total hip arthroplasty in patients with osteopetrosis. Presently, total hip arthroplasty remains a valuable treatment option in osteopetrosis patients when executed with precision.