RESUMEN
Objective To improve the diagnosis of CT for osseous abnomalities of lumbar posterior margin concurrent herniated disk.Methods X-ray and CT scan materials of 56 cases with herniated intervertebral disks were retrospectively studied.Results The morbidity of osseous abnomalities of lumbar posterior margin included:lumbar posterior marginal intraosseons node、lumbar posterior marginal osteophytic formation,herniated disk calcification,post longitudinal ligmentum calcification,lumbar positerior marginal fracture.Conclusion This kind of osseous abaomality is a bony fragment that is seen to protrud into the spinal canal,compression of the dural sac and nerve root,concurrent displacement of intervertebral disk.Analysis in combination with X-ray and CT images of coronal or sagittal reconstruction is helpful increasing the accuracy rate of diagnosis.