4.2 Article

Workers' Compensation, Return to Work, and Lumbar Fusion for Spondylolisthesis

Journal

ORTHOPEDICS
Volume 39, Issue 1, Pages E1-E8

Publisher

SLACK INC
DOI: 10.3928/01477447-20151218-01

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Categories

Funding

  1. Alphatec
  2. Spine 360
  3. K1
  4. Stryker

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Lumbar fusion for spondylolisthesis is associated with consistent outcomes in the general population. However, workers' compensation is a risk factor for worse outcomes. Few studies have evaluated prognostic factors within this clinically distinct population. The goal of this study was to identify prognostic factors for return to work among patients with workers' compensation claims after fusion for spondylolisthesis. The authors used International Classification of Diseases, Ninth Revision, and Current Procedural Terminology codes to identify 686 subjects from the Ohio Bureau of Workers' Compensation who underwent fusion for spondylolisthesis from 1993 to 2013. Positive return to work status was recorded in patients who returned to work within 2 years of fusion and remained working for longer than 6 months. The criteria for return to work were met by 29.9% (n=205) of subjects. The authors used multivariate logistic regression analysis to identify prognostic factors for return to work. Negative preoperative prognostic factors for postoperative return to work included: out of work for longer than 1 year before fusion (P<.001; odds ratio [OR], 0.16); depression (P=.007; OR<0.01); long-term opioid analgesic use (P=.006; OR, 0.41); lumbar stenosis (P=.043; OR, 0.55); and legal representation (P=.042; OR, 0.63). Return to work rates associated with these factors were 9.7%, 0.0%, 10.0%, 29.2%, and 25.0%, respectively. If these subjects were excluded, the return to work rate increased to 60.4%. The 70.1% (n=481) of subjects who did not return to work had markedly worse outcomes, shown by higher medical costs, chronic opioid dependence, and higher rates of failed back syndrome, total disability, and additional surgery. Psychiatric comorbidity increased after fusion but was much higher in those who did not return to work. Future studies are needed to identify how to better facilitate return to work among similar patients with workers' compensation claims.

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