• Xiuru Zhang, Yanzheng Gao, Kun Gao, Zhenghong Yu, Dongbo Lv, Hao Ma, and Gongwei Zhai.
• Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital; People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan, China.
• Eur Spine J. 2020 Nov 1; 29 (11): 2838-2844.

PurposeThe aim of the present study was to investigate the factors associated with axial symptom using multivariable analysis.MethodsThe authors retrospectively assessed 249 patients treated by open-door laminoplasty. The patients were classified into two groups: axial symptom and no axial symptom group. The possible factors included demographic variables (age, sex, BMI, smoking, heart disease, diabetes, preoperative neck pain, preoperative JOA scores, preoperative NDI, course of disease and pathogenesis) and surgical and radiological variables [operation time, intraoperative blood loss, collar wear time, preoperative cervical curvature, postoperative cervical curvature, T1 slope, preoperative and postoperative C2 sagittal vertical axis (C2 SVA)].ResultsThe prevalence of axial symptom was 34.9% (89/249). The collar wear time, preoperative and postoperative C2 SVA were risk factors for axial symptom. A cutoff value of 22.6 mm for preoperative C2 SVA and 3.5 weeks for collar wear time predicted the development of axial symptom.ConclusionsThe longer collar wear time, larger preoperative and postoperative C2 SVA were positively correlated with the higher incidence of axial symptom.

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