Determinants of 6-12 month postoperative functional status and pain after elective total hip replacement

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Abstract

Objective: The goal of this pilot project was to quantify outcomes of elective total hip replacement through risk adjustment modeling. Design: A retrospective cohort study of patients who underwent elective total hip replacement (THR) during 1991 at the Orthopaedic and Arthritic Hospital in Toronto. Study participants: All patients undergoing elective total hip replacement with a confirmed diagnosis of osteoarthritis were asked to participate in the study; 193 patients agreed. Outcome measures: Participants were asked to complete the WOMAC Osteoarthritis Index and the RAND 36-item Health Survey 6 months to 1 year post-operatively. Pre-operative information on pain and functional status was obtained from the patients' medical record. Results: The results indicate that 93% of patients studied reported at least one significant co-morbidity. The mean preoperative pain score was 7.5 on a 0-10 scale and average change in pain was 4.8. Regression analyses indicate that increased body mass index is associated with lower post-operative functional status and increased post-operative pain. The amount of pain relief the patient was able to obtain pre-operatively using non-surgical interventions was associated with a better outcome.

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Braeken, A. M., Lochhaas-Gerlach, J. A., Gollish, J. D., Myles, J. D., & Mackenzie, T. A. (1997). Determinants of 6-12 month postoperative functional status and pain after elective total hip replacement. International Journal for Quality in Health Care, 9(6), 413–418. https://doi.org/10.1093/intqhc/9.6.413

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