الفهرس 
HISTORICAL NOTEOnly 14 pages are availabe for public view
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Abstract
In this study, the following items were discussed : Embryological origin of the intervertebral disc, which originates from the central nucleus pulposus derived from notochrod and from the fibroplastic extension of the vertebral bodies. Anatomical structure of the lumbar spine, where normal lumbar lordosis is maintained by the wedge shaped normal lumbar intervertebral discs which lie between adjacent surfaces of the bodies of vertebrae. 2 major anatomical lesions can be defined ; disc protrusion, where annulus fibrosus forms a smooth continuous ring confining the nucleus pulposus bulge which is either localized or diffuse. Disc herniation, where segment of cartilage plate and posterior annular fibres are displaced posteriorly. The diagnosis and accurate localization of lumbar disc prolapse depends on myelography. With appropriate projection, myelography will accurately localize disc prolapse. The basis of any rational and effective treatment of a lumbar disc lesion is the establishment of the most favorable condition for natural healing. The vast majority recover with effective conservative treatment. Results of initial lumbar surgery are best assessed by the effect of operation on both backache and sciatica. The results of this work reveal that myelography is the most important routine work for detecting level of L.D.P. guided by clinical examination.