Reciprocal changes in cervical spine alignment after corrective thoracolumbar deformity surgery

Yoon Ha, Frank Schwab, Virginie Lafage, Gregory Mundis, Christopher Shaffrey, Justin Smith, Shay Bess, Christopher Ames

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Purpose: To identify changes in cervical alignment parameters following surgical correction of thoracolumbar deformity and then assess the preoperative parameters which induce changes in cervical alignment following corrective thoracolumbar deformity surgery. Methods: A retrospective study of 49 patients treated for thoracolumbar deformity with preoperative planning of an acceptably aligned coronal and sagittal plane in each case. We compared cervical spine parameters in two distinct low [preoperative C7 sagittal vertical axis (SVA) ≤6 cm] and high (preoperative C7 SVA ≥9 cm) C7 SVA groups. Multilinear regression analysis was performed and revealed the relationship between postoperative cervical lordosis and preoperative spinopelvic parameters and surgical plans. Results: In the lower C7 SVA group, cervical lordosis was significantly increased after thoracic/lumbar deformity correction (p < 0.01). In contrast, the high C7 SVA group showed decreased cervical lordosis postoperatively (p < 0.01). Multilinear regression analysis demonstrated the preoperative parameters (preoperative C2-7 angle, T1 slope, surgical plan for PT and C7 SVA), which determine the postoperative cervical lordosis. Conclusion: In spinal deformity procedures, preoperative spinal alignment parameters, and surgical plans could affect postoperative cervical spine alignment.

Original languageEnglish
Pages (from-to)552-559
Number of pages8
JournalEuropean Spine Journal
Volume23
Issue number3
DOIs
Publication statusPublished - 2014 Mar

Bibliographical note

Funding Information:
Acknowledgments This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (2011-0011066).

All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine

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