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Abstract Objective： To study the relation between Intervertebral disc herniation and lumbosacral transitional vertebra on CT. Method： There were 135 patients with lumbosacral transitional vertebra， the type of lumbosacral transitional vertebra and the CT manifestations， the anatomy， type， form and severity of Intervertebral disc herniation were analyzed for all patients. Result： The incidence of Lumbar sacral was more than that of Sacral vertebra waist， lumbosacral transitional vertebra were prone to caused lumbar disk hernia in lumbar 4/5 clearance， many involving multiple intervertebral disc， dural sac and nerve root were compressed severely. Conclusion： Lumbosacral transitional vertebra easily lead to the occurrence of lumbar disc hernia， and the extent of the lesions occur heavier.
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