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Do 1-year outcomes predict 2-year outcomes for adult deformity surgery?

Publication ,  Journal Article
Glassman, SD; Schwab, F; Bridwell, KH; Shaffrey, C; Horton, W; Hu, S
Published in: Spine J
April 2009

BACKGROUND CONTEXT: Health-related quality-of-life (HRQOL) measures are being used more frequently in the evaluation of the adult deformity patient. This is due in part to the validation of the deformity-specific Scolios Research Society-22 (SRS-22). Hence, relationships between HRQOL outcomes and traditional measures of success such as deformity correction, fusion healing, and complications are being established. PURPOSE: To examine the pattern of HRQOL outcome responses after adult deformity surgery. STUDY DESIGN: Analysis of prospective multicenter cohort. PATIENT SAMPLE: Two hundred and eighty-three adult deformity patients with preoperative, 1-, and 2-year postoperative outcome measures. OUTCOME MEASURES: SRS-22, Short Form-12 (SF-12), Oswestry Disability Index (ODI), and back and leg pain numeric rating scale scores. METHODS: Preoperative versus postoperative health status measures were evaluated by matched-pairs sample t test statistics and post hoc analysis of variance (ANOVA) findings. RESULTS: SRS-22 improved from a mean 3.03 points at baseline to 3.21 points at 6 months, 3.71 points at 1 year, and 3.70 points at 2 years post-op. Mean ODI score was 37.0 points pre-op and improved to 27.0 points at 6 months, and 22.8 points at 1 and 2 years post-op. Mean SF-12 physical component score was 33.7 points at baseline, improving to 36.9 points at 6 months, 40.6 points at 1 year, and 40.5 points at 2 years post-op. Paired samples analysis comparing 6-month and 1-year post-op scores showed deterioration for numeric rating scale leg pain (p=0.05). There was a trend for improvement in SF-12 physical component score (p=0.06). Significant improvement between 6 months and 1 year post-op was noted for ODI (p=0.02) and SRS total score (p<0.0001). Comparison of 1- versus 2-year postoperative scores revealed no statistically significant differences for any of the HRQOL parameters. CONCLUSIONS: This study supports the application of HRQOL measures, including the deformity-specific SRS-22, as a valuable tool in the assessment of adult deformity patients. Change in outcome score stabilized after the 1-year postoperative interval, for most patients.

Duke Scholars

Published In

Spine J

DOI

EISSN

1878-1632

Publication Date

April 2009

Volume

9

Issue

4

Start / End Page

317 / 322

Location

United States

Related Subject Headings

  • Young Adult
  • Surveys and Questionnaires
  • Spinal Fusion
  • Scoliosis
  • Reproducibility of Results
  • Quality of Life
  • Prospective Studies
  • Predictive Value of Tests
  • Pain, Postoperative
  • Orthopedics
 

Citation

APA
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ICMJE
MLA
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Glassman, S. D., Schwab, F., Bridwell, K. H., Shaffrey, C., Horton, W., & Hu, S. (2009). Do 1-year outcomes predict 2-year outcomes for adult deformity surgery? Spine J, 9(4), 317–322. https://doi.org/10.1016/j.spinee.2008.06.450
Glassman, Steven D., Frank Schwab, Keith H. Bridwell, Christopher Shaffrey, William Horton, and Serena Hu. “Do 1-year outcomes predict 2-year outcomes for adult deformity surgery?Spine J 9, no. 4 (April 2009): 317–22. https://doi.org/10.1016/j.spinee.2008.06.450.
Glassman SD, Schwab F, Bridwell KH, Shaffrey C, Horton W, Hu S. Do 1-year outcomes predict 2-year outcomes for adult deformity surgery? Spine J. 2009 Apr;9(4):317–22.
Glassman, Steven D., et al. “Do 1-year outcomes predict 2-year outcomes for adult deformity surgery?Spine J, vol. 9, no. 4, Apr. 2009, pp. 317–22. Pubmed, doi:10.1016/j.spinee.2008.06.450.
Glassman SD, Schwab F, Bridwell KH, Shaffrey C, Horton W, Hu S. Do 1-year outcomes predict 2-year outcomes for adult deformity surgery? Spine J. 2009 Apr;9(4):317–322.
Journal cover image

Published In

Spine J

DOI

EISSN

1878-1632

Publication Date

April 2009

Volume

9

Issue

4

Start / End Page

317 / 322

Location

United States

Related Subject Headings

  • Young Adult
  • Surveys and Questionnaires
  • Spinal Fusion
  • Scoliosis
  • Reproducibility of Results
  • Quality of Life
  • Prospective Studies
  • Predictive Value of Tests
  • Pain, Postoperative
  • Orthopedics