[Coxarthrosis associated with osteopetrosis treated by surfacing arthroplasty. Apropos of a case].

Early onset osteoarthritis of the hip associated with osteopetrosis has been described in the literature. The surgical management of these patients has been difficult and fraught with complications. We describe a case in which a custom resurfacing hip arthroplasty was performed in a patient with osteopetrosis and severe osteoarthritis of the hip.