OBJECTIVE: To report functional outcomes after metal-on-metal (MOM) hip resurfacing. DESIGN: A cohort of 126 MOM hip resurfacing operations were reviewed 1 year after surgery. SETTING: Hospital trust specializing in orthopedic surgery. PARTICIPANTS: Sixty-seven right and 59 left hips were reviewed in patients (N=120; 71 men, 49 women; mean age, 56+/-9y; range, 24-76y). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Administered once at follow-up. Function was measured using the Oxford Hip Score (OHS), Hip disability and Osteoarthritis Outcome Score, and UCLA Activity Score. Complications, pain, range of motion, Trendelenburg test, strength, walking, single-leg stand, stair climbing, and 10-m walk time were assessed. RESULTS: Overall examination was satisfactory with few complications. High functional levels were reported. The median OHS was 15 and median UCLA Activity Score 7 (active). For 25%, outcome was poor with persistent pain, reduced hip flexion (mean, 94.46 degrees +/-12.7 degrees ), decreased strength (P<.001), restricted walking, and functional limitations. CONCLUSIONS: Information about outcomes is important for patients undergoing surgery. Hip resurfacing remains an emergent technology, with further follow-up and investigation warranted. One explanation for suboptimal recovery may be current rehabilitation, originally developed after total hip arthroplasty. Rehabilitation tailored to hip resurfacing, paced for this active population and progressed to higher demand activities, may improve outcomes.

Original publication

DOI

10.1016/j.apmr.2007.09.045

Type

Journal article

Journal

Arch Phys Med Rehabil

Publication Date

04/2008

Volume

89

Pages

660 - 666

Keywords

Activities of Daily Living, Adult, Aged, Arthroplasty, Replacement, Hip, Cohort Studies, Female, Femur Head Necrosis, Follow-Up Studies, Gait, Hip Fractures, Hip Prosthesis, Humans, Male, Metals, Middle Aged, Osteoarthritis, Hip, Pain Measurement, Postoperative Complications, Prosthesis Design, Prosthesis Failure, Range of Motion, Articular, Recovery of Function, Reoperation, Risk Assessment, Severity of Illness Index, Statistics, Nonparametric, Treatment Outcome