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KMID : 1001920130540010034
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Journal of Korean Neurosurgical Society
2013 Volume.54 No. 1 p.34 ~ p.37
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Modic Degenerative Marrow Changes in the Thoracic Spine : A Single Center Experience
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Lee Jae-Meen
Nam Kyoung-Hyup
Lee In-Sook
Park Se-Kyung
Choi Byung-Kwan
Han In-Ho
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Abstract
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Objective: The purposes of this study were to evaluate the prevalence, types, and locations of Modic changes (MCs) in the thoracic spine in a large number of subjects, and to investigate the relation between the distributions of MCs and disc herniations (DHs) in the thoracic spine.
Methods: Two experienced musculoskeletal radiologists assessed the presence of MCs and DHs by consensus in the thoracic MRIs of 144 patients with non-specific back pain. Patient ages ranged from 22 to 88 years (mean=53.3±14.66 years), and 72 were female (50%). The prevalence, distribution, relation of MCs and DHs was recorded.
Results: MC was observed in 8 of the 144 patients (5.6%) and 10 of 1728 segments (0.58%). The most common MC was type II. Of the 8 patients exhibiting MC, 6 had type II (75.0%), and 2 had mixed MCs (type I/II or type II/III). MCs were distributed mainly at the mid-thoracic level (from T5/6 to T9/10). DH was detected in 18 patients (12.5%), 36 of 1728 segments (2.1%). Of the 10 segments exhibiting MC, 5 had DHs at the same level (50.0%). Accordingly, DH was strongly associated with MC (p=0.000).
Conclusion: A low prevalence of MC was observed in the thoracic spine, and type II MC predominated. The low prevalence of MC in the thoracic spine suggests that it was caused by a relative lack of mobility as compared with the cervical and lumbar spines. And DHs were found to be strongly associated with MCs even in the thoracic spine.
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KEYWORD
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Prevalence, Modic change, Thoracic spine, Disc herniation
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