Property | Value |
Name | Thoracolumbar Neural Canal - A Morphometric And Morphological Study In North Indian Population |
Description | Research article:- * Gupta R1, Singla R.K2. 1.Senior Lecturer, Department of Anatomy, Dasmesh Institute of Research and Dental Sciences, Faridkot, 151203 Punjab, India. 2.Additional Professor, Department of Anatomy, Government Medical College, Amritsar-143001, Punjab, India.
Abstract :- Introduction: Anatomical stenosis of lumbar canal has been attributed as a cause of spinal stenosis syndrome. It may be developmental or acquired i.e. from ageing, injury, disease or spinal operations. Diagnosis of developmental spinal stenosis is based on the measurements of the bony spinal canal. A stenosis, which may produce compression of caudal nerve roots in the absence of other compressive agents, occurs with midsagittal diameter of 10mm or less. A reduced interpedicular distance has also been blamed to cause primary narrowing of spinal canal. Material and methods: The material for present study comprised of 30 human adult male thoracolumbar vertebral columns. Shape of vertebral foramen was observed. Four parameters viz. Cephalic, and caudal anteroposterior diameters (A.P.), transverse diameter of vertebral foramen, transverse diameter of vertebral body along its waist were measured and canal to body ratio was calculated. Results: The shape of neural canal was found to be oval in thoracic and triangular in lumbar region. Cephalic & caudal A.P. diameters increased from T1to T12 and then decreased upto L3-L4 being maximum at T12 and L1 which may be attributed to lumbar enlargement of spinal cord lying at this level. However, the transverse diameter showed an initial decline till T3 and then remained constant till T7. Thereafter, it increased gradually till L5. It was seen that while A.P. diameters increased upto L1,L2 levels only, the transverse diameter increased upto L5 which is explained by the fact that caudal to L1,L2, there lies cauda equina whose nerves may be going laterally to their respective intervertebral foramina for exit thus increasing transverse diameter of neural canal. Transverse diameter of vertebral body along the waist showed an initial decline till T4 and then increased constantly till L5.Canal to body ratio was found to be constant (0.6+0.06) at all the levels.
Keywords:- Anteroposterior diameters, Neural canal, Spinal stenosis, Transverse diameters, Vertebral body. |
Filename | Gupta R et. al..pdf |
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Creator | admin |
Created On: | 10/17/2011 00:00 |
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Last updated on | 11/23/2011 08:53 |
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