Journal of AdvancedMedical and Dental Sciences Research

Background: In lumbar disc herniation (LDH), narrowing of the space available for the thecal sac can be due to protrusion of disc through an intact AF. The present study was conducted to assess canal stenosis of herniated lumbar disc and its correlation to anterior posterior diameter with magnetic resonance. Materials & Methods: 65 lumbar disc herniation syndrome patients of both genderswere put in group I and control in group II. Straight leg rising test (SLRT) was carried in cases. Sagittal anterior posterior (SAG) and cross sectional area of the spinal canal, the height of I.V. disc, type of disc prolapse, disc hydration, and vertebral body width was recorded. A SAG value of 11 and 12 was regarded as relative stenosis and a value < 11 mm as absolute stenosis. Results: Out of 65 patients, males were 35 and females were 30.AP diameter (mm) of spinal cord at L3-L4 in age group 0-20 years in group I was 12.4 and in group II was 12.6, in age group 21-40 years has 12.1 and 12.2, in age group 41-60 years had 12.5 and 12.4 and >60 years had 12.7 and 12.6 in group I and II respectively. The difference was non- significant (P> 0.05).AP diameter (mm) of spinal cord at L4-L5 in age group 0-20 years in group I was 11.4 and in group II was 15.6, in age group 21-40 years has 11.1 and 15.2, in age group 41-60 years had 11.8 and 15.4 and >60 years had 11.6 and 15.6 in group I and II respectively. The difference was significant (P< 0.05).AP diameter (mm) of spinal cord at L5- S1 in age group 0-20 years in group I was 11.2 and in group II was 16.4, in age group 21-40 years has 11.1 and 16.2, in age group 41-60 years had 11.6 and 16.7 and >60 years had 11.3 and 16.3 in group I and II respectively. The difference was significant (P< 0.05). Conclusion: The maximum number of disc prolapse occurs between 21 and 40 age group. It is seen maximum number of herniation occurs at the level of L4 L5.