Journal List > J Korean Soc Spine Surg > v.23(2) > 1076123

J Korean Soc Spine Surg. 2016 Jun;23(2):77-83. Korean.
Published online June 29, 2016.
© Copyright 2016 Korean Society of Spine Surgery
Factors Associated with Early Postoperative Complications in Patients with Cervical Spondylotic Myelopathy
Min-Woo Kim, M.D., Jeong Ho Seo, M.D. and Kyu Yeol Lee, M.D., Ph.D.
Department of Orthopedic Surgery, College of Medicine, Dong-A University, Korea.

Corresponding author: Kyu Yeol Lee, M.D., Ph.D. Department of Orthopedic Surgery, College of Medicine, Dong-A University, 1, Dongdaesin-dong 3-ga, Seo-gu, Busan 602-715, Korea. TEL: +82-51-240-2867, FAX: +82-51-243-9764, Email:
Received July 31, 2015; Revised August 06, 2015; Accepted February 16, 2016.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Study Design



To investigate factors related to early postoperative complications of surgery for cervical spondylotic myelopathy (CSM).

Summary of Literature Review

Factors associated with increased risk of complications from surgery for CSM are greater age, greater estimated blood loss, longer operative duration, and anterior-posterior combined procedures.

Materials and Methods

The records of patients (male 32, female 19, mean age 61 years) who underwent surgery for CSM between November 2004 and December 2014 were investigated for early postoperative complications and potentially related factors. Factors considered were age, gender, duration of symptoms, diabetes, smoking, comorbidity, preoperative Japanese Orthopedic Association (JOA) score, numbers of cervical levels involved, ossification of the posterior longitudinal ligament (OPLL), operative approach, fusion, operative duration, estimated blood loss (EBL), maximal cord compression ratio on MRI, and cord signal intensity change on T2-weighted MRI.


Early postoperative complications were observed in 12 of 51 patients and included motor weakness in 3, pneumonia in 2, and delirium, dysphagia, hematoma, pulmonary thromboembolism, sore, seizure, wound dehiscence, and superficial infection, each in 1. Factors associated with early postoperative complications were operative duration (p=0.024), maximal cord compression ratio on MRI (p=0.009), and cord signal intensity change on T2-weighted MRI (p=0.009). The other factors were not found to correlate significantly.


Factors associated with early postoperative complications for CSM are operative duration, compression ratio at the level of maximal cord compression on MRI, and cord signal intensity change on T2-weighted MRI.

Keywords: Cervical; Myelopathy; Postoperative; Complication; Factor


Table 1
Complications following surgery for cervical spondylotic myelopath
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Table 3
Factors affecting complications following surgery for cervical spondylotic myelopathy
Click for larger imageClick for full tableDownload as Excel file

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