title: Surface replacement hemiarthroplasty for the treatment of osteonecrosis of the femoral head.
abstract: We reviewed the results of thirty-three femoral resurfacing procedures in twenty-five patients who had stage-III or early stage-IV osteonecrosis of the femoral head according to the classification system of Ficat and Arlet. There were no perioperative complications. Thirty hip prostheses (91 percent) survived for a minimum of five years. At a mean of 10.5 years (range, four to fourteen years) postoperatively, sixteen (62 percent) of the twenty-six hips with stage-III disease had a good or excellent Harris hip score. Four of the seven hips with stage-IV disease did not have or need a total hip arthroplasty. Overall, twenty hips (61 percent) had a good or excellent result according to the scoring system of Harris, and thirteen (39 percent) had a fair or poor result and subsequently had or needed a total hip arthroplasty. The mean interval between the hemiarthroplasty and the total hip arthroplasty was sixty months (range, thirty-six to 136 months). These thirteen hips all had a successful clinical result (a Harris hip score of at least 80 points) at a mean of thirty months (range, twenty-four to seventy-two months) after the total hip arthroplasty. The results of the present study suggest that resurfacing of the femoral head can be a successful interim procedure for the management of patients who have Ficat and Arlet stage-III or early stage-IV disease with a large lesion that is not amenable to other treatment options except total hip arthroplasty.
authors.affiliation: Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore 21239, USA.
authors.forename: M W
authors.initials: MW
authors.lastname: Hungerford
authors.forename: M A
authors.initials: MA
authors.lastname: Mont
authors.forename: R
authors.initials: R
authors.lastname: Scott
authors.forename: C
authors.initials: C
authors.lastname: Fiore
authors.forename: D S
authors.initials: DS
authors.lastname: Hungerford
authors.forename: K A
authors.initials: KA
authors.lastname: Krackow
mesh_terms: D000328:Adult; D000368:Aged; D001178:Arthroplasty / Q000379:methods*; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging / Q000601:surgery*; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011859:Radiography