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KMID : 1001920140560030200
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Journal of Korean Neurosurgical Society
2014 Volume.56 No. 3 p.200 ~ p.205
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Extent of Disc Degeneration after Single-Level Cervical Anterior Microforaminotomy Analyzed with Long-Term Radiological Data
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Han Chul
Kim Myung-Hyun
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Abstract
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Objective: To prove the extents and details of cervical degeneration after anterior microforaminotomy (AMF) with 6-years follow-up.
Methods: A retrospective study of 24 patients, underwent single-level AMF, was performed. Clinical and radiologic data were analyzed with office charts, questionaires, and picture achieving and communication system images.
Results: According to Odom’s criteria, 91.6% achieved favorable outcome. The mean visual analog scale score was improved from 8.6 to 3, and the mean neck disability index was improved from 27.9 to 7.3 (p<0.01). Eighteen cases (75%) showed disc height (DH) decrease. The disc invasion was correlated with DH decrease (p<0.05). The disc height decrease correlated with static, dynamic changes of shell angle and spur formation (p<0.05). Any radiological parameters did not affect the clinical outcome.
Conclusion: AMF is an effective technique for treating unilateral cervical radiculopathy. It showed excellent surgical outcomes even in long-term follow-ups. However, a decrease in DH occurred in a considerable number of patients. Disc invasion during surgery may be the trigger of sequential degeneration.
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KEYWORD
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Microforaminotomy, Disc height, Disc invasion, Disc degeneration
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