title: Bipolar hemiarthroplasty for primary osteoarthritis of the hip: a review of 41 cases with 8 to 10 years of follow-up.
abstract: This article reports the results of 41 hips in 36 patients who underwent bipolar hemiarthroplasty for primary osteoarthritis of the hip. Surgical technique included a complete capsulectomy and light reaming of the acetabulum in all patients. The average follow-up was 8.9 years with a minimum of 8 years. Harris hip scores improved from 49 preoperatively to 93 at the latest follow-up, with 95% of the hips rated as excellent or good. Two patients had mild, intermittent groin pain, while a third developed recalcitrant pain necessitating revision. Migration of the bipolar cup was minimal with an average of 2.3 mm superior and 2.1 mm medial migration. Survivorship analysis demonstrated an 89.5% survival rate at 10 years.
authors.affiliation: Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard School of Medicine, Boston, Mass., USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Kindsfater
authors.forename: A I
authors.initials: AI
authors.lastname: Spitzer
authors.forename: J L
authors.initials: JL
authors.lastname: Schaffer
authors.forename: R D
authors.initials: RD
authors.lastname: Scott
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome