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Incidence and risk factors of poor clinical outcomes in patients with cervical kyphosis after cervical surgery for spinal cord injury

Authors Zhang Y, Li J, Li Y, Shen Y

Received 26 August 2017

Accepted for publication 14 November 2017

Published 8 December 2017 Volume 2017:13 Pages 1563—1568

DOI https://doi.org/10.2147/TCRM.S150096

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Hoa Le

Peer reviewer comments 2

Editor who approved publication: Professor Deyun Wang

Yanwei Zhang,1 Jia Li,2,3,* Yongqian Li,2,3 Yong Shen2,3,*

1Department of Emergency, Xingtai People’s Hospital of Hebei Medical University, Xingtai, 2Department of Orthopedic Surgery, Third Hospital of Hebei Medical University, 3Key Laboratory of Orthopedic Biomechanics of Hebei Province, Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China

*These authors contributed equally to this work

Objective: This retrospective study investigated the incidence and risk factors of poor clinical outcomes after cervical surgery for cervical spinal cord injury in a large population of patients with global or segmental cervical kyphosis.
Methods: The clinical and radiological evaluation results of 269 patients with cervical kyphosis who underwent either anterior or posterior surgery between 2008 and 2013 were collected, preoperatively and at each follow-up after surgery.
Results: All patients were followed for an average of 2.5 years. Outcomes were classified as good or poor (n=156 and 113 patients, respectively), based on the Japanese Orthopedic Association (JOA) recovery ratios. The rates of patients with good or poor outcomes were statistically comparable with regard to gender ratio, type of injury, history of diabetes or cardiovascular disease, interval between injury and surgery, and follow-up time. The multivariate logistic regression analysis indicated that the following were independent predictors of poor improvement: patient age (P=0.016, odds ratio [OR] =1.0261); preoperative JOA scores (P=0.003, OR =0.1932); and cervical instability (P=0.004, OR =2.1562).
Conclusion: This study showed that advanced age, low preoperative JOA score, and cervical instability are closely associated with a poor surgical outcome in patients with cervical kyphosis. However, these results do not suggest that the type of cervical kyphosis influences the clinical outcome of surgery.

Keywords: cervical kyphosis, segmental kyphosis, global kyphosis, spinal cord injury, spinal cord surgery, poor outcome
 

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