Arthroplasty has been shown to reduce the rate of reoperation after femoral neck fracture. A number of studies have compared the outcomes of unipolar and bipolar arthroplasty. At 1- to 3-year follow-up, the functional outcomes of unipolar and bipolar arthroplasty are equivalent. Bipolar arthroplasty has a higher initial cost. However, the long-term results of acetabular wear and need for revision are unknown.
From the *National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD; and †Dartmouth-Hitchcock Medical Center Orthopaedic Surgery: One Medical Center Drive, Lebanon, NH.
Accepted for publication May 11, 2009.
T.B. has received consulting fees from Stryker and educational honorariums from AO North America. K.K. is a consultant for Biomet and Stryker and receives royalties from Biomet.
Reprints: Timothy Bhattacharyya, MD, National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, 10 Center Drive, Bldg 10-CRC, Room 4-2339, Bethesda, MD 20892 (e-mail: firstname.lastname@example.org).