• Sabarul A Mokhtar, Peter F McCombe, Owen D Williamson, Michael K Morgan, Gavin J White, and William R Sears.
• Department of Spinal Surgery, The Australian School of Advanced Medicine, Macquarie University, Sydney, New South Wales 2109, Australia. drsam2020@yahoo.com
• Spine J. 2010 Apr 1;10(4):306-12.

Background ContextDegenerative spine disease will become an increasing health problem, and a significant number of patients will be considered for surgery. Spinal surgeries have evolved since the last decades, and there is a positive impact on the clinical outcomes. Few works in the literature have reviewed the outcome compared with large joint replacement surgery, which is considered a benchmark for operative restoration of patients' quality of life.PurposeThe purpose of this study was to investigate if spinal fusion can return patients' health-related quality of life to that of age-matched population norms and yield outcomes comparable with those of total hip and knee joint replacement.Study DesignThis is a prospective cohort study.Patient SampleThe sample consists of 100 consecutive patients who were enrolled between December 1997 and January 2007.Outcome MeasuresThe 12-item Short Form Health Survey (SF-12) was chosen for outcome measurement.MethodsAll patients underwent wide decompressive laminectomy and single-level posterior lumbar interbody fusion for spinal stenosis associated with degenerative spondylolisthesis.ResultsThe preoperative and postoperative physical component summary (PCS)-12 scores of the spinal fusion patients were comparable with those of both the total knee and hip replacement patients. The mean improvement in PCS-12 scores after spine surgery was 11 (95% confidence interval [CI]: 9-14, p<.0001). It was equal to that after total hip replacement surgery, which was 11 (95% CI: 9-13), and higher than that of total knee replacement patients, which had an improvement of 8 (95% CI: 7-9). The postoperative mean and 95% CI of the PCS-12 scores for the three surgical procedures approached the population norm value of 44 (95% CI: 43-46).There was no statistical difference between the postoperative mental component summary-12 score among all the three surgical groups, which approached similar to the population norm value of 54 (95% CI: 53-54).ConclusionsThe current study demonstrated that spinal surgery can return patients' HRQL to that of age-matched population norms and yield outcomes comparable with those of total hip and knee joint replacement patients.

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