Trochanteric non-union following revision hip replacement is associated with a poor functional outcome: a matched, case-control study.
The aim of this study was to determine the functional outcome in patients with a trochanteric non-union following revision total hip replacement. Twenty-five consecutive patients with a unilateral, trochanteric non-union were individually matched for age, sex, body mass index and duration of follow-up to two control groups: 1) 25 patients who had a primary total hip replacement ('primary controls'); and 2) 25 patients who had a revision total hip replacement ('revision controls'). At a mean follow up of approximately four years, the Harris hip score (HHS) for the cases was significantly worse compared to the primary control group (p<0.0001) and the revision control group (p<0.0001), with an overall 'poor' outcome in over half of the patients. The physical component of the Short Form-12 (SF-12) score was also significantly worse for the cases compared to the primary control group (p = 0.001), while the difference in the mental component approached significance (p = 0.057). There was no difference in the SF-12 scores between the cases and the revision control group (p = 0.1 and p = 0.4, respectively). A non-union of the greater trochanter is associated with a poor functional outcome following revision total hip replacement.
1 Department of trauma and orthopaedic surgery, Royal Infirmary of Edinburgh, Edinburgh - UK.
Anish K
AK
Amin
Neil
N
Bergman
D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D016022:Case-Control Studies; D005260:Female; D005264:Femoral Fractures / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D017102:Fracture Healing; D005599:Fractures, Ununited / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D015207:Osteoarthritis, Hip / Q000503:physiopathology / Q000601:surgery*; D011379:Prognosis; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology*; D012086:Reoperation / Q000009:adverse effects; D012307:Risk Factors; D013997:Time Factors