Characteristics of Modic changes in cervical kyphosis and their association with axial neck pain
Authors An YH, Li J, Li YQ, Shen Y
Received 30 March 2017
Accepted for publication 24 June 2017
Published 14 July 2017 Volume 2017:10 Pages 1657—1661
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Amy Norman
Peer reviewer comments 3
Editor who approved publication: Dr Katherine Hanlon
Yonghui An,1,2 Jia Li,1,2 Yongqian Li,1,2 Yong Shen1,2
1Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China; 2The Key Laboratory of Orthopedic Biomechanics of Hebei Province, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
Background: The purpose of this study was to evaluate characteristics of Modic changes in cervical kyphosis (CK) and their association with axial neck pain.
Methods: Study participants included 286 asymptomatic or symptomatic patients with CK (mean age = 54.2 ± 12.2 years) who were consecutively enrolled from March 2009 to October 2015. Clinical and radiographic evaluations were performed at a university outpatient department. CK was classified as global type, reverse sigmoid type, or sigmoid type.
Results: There were 138 participants with global type CK, 103 with reverse sigmoid type CK, and 45 with sigmoid type CK. Of the 286 participants, 102 had Modic changes (Modic-1 in 38 segments and Modic-2 in 75 segments). Spinal cord compression grade and disc degeneration occurred more frequently in the group with axial neck pain compared to the group without pain. Angular motion was decreased in those with axial neck pain (mean ± standard deviation [SD] 7.8°±4.6°) compared to those who were asymptomatic (mean ± SD 8.9°±5.1°; P<0.001). In multivariate logistic regression analysis, Modic changes were associated with axial neck pain (odds ratio =5.356; 95% confidence interval =1.314–12.800; P<0.001).
Conclusion: Modic changes occur most commonly in association with CK global type and less commonly with reverse sigmoid type and sigmoid type. Modic changes are associated with axial neck pain in patients with CK.
Keywords: cervical kyphosis, axial neck pain, Modic change, kinematic analysis, magnetic resonance imaging
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