objective:To investigate the diagnostic value of cervical kinematic MRI for the disc herniation. Methods:60 patients who were clinical y suspected the cervical disc herniation were examined with the neutral, flexion and extension position of MRI. The images were analyzed using computer software to objectively quantify the amount of disc herniation. Results:Compared to neutral position, cervical disc herniations were significantly increased in extension MRI. For patients with normal or 3 mm of disc bulge in neu-tral, 2.46% demonstrated an increase in herniation to 3 mm bulge in flexion, and 17.25% demonstrated an increase to 3 mm bulge in extension. For patients in the neutral view that had a baseline disc bulge of 3 to 5 mm, 3.61%had increased herniations to 5mm in flex-ion and 11.65%had increased herniations to 5 mm in extension. Conclusion accurate increase in the degree of cervical disc herniation is found by examining flexion and extension views when compared with neutral views alone. Kinematic MRI views provide valuable added information and it is an important complement to the neutral position.
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