Morphometric Study of the Lumbar Spray in the African Black West Subject: Interest in Surgery. About a CT Scans of 170 Cases in Ouagadougou (Burkina Faso)

Abstract

Objective: Our study aimed at analyzing the morphometry of the lumbar spine at the CT scan and to specify its interest in spinal surgery. Methodology: This was a prospective study conducted from May 1, 2011 to July 31, 2011 in Ouagadougou. During this study, 170 patients aged 45.3 ± 12.5 years old with a sex ratio of 1.15 received a CT scan. The symptomatology was dominated by low back pain (60.6%) and lumbar osteoarthritis was the most common etiology (51.8%). The measurements were performed directly on axial and sagittal sections of the lumbar spine with measurement of the vertebral body, and pedicles. Results: The vertebral body increased forward from 24.9 mm in L1 to 26.7 mm in L5 and decreasing backwards from 26.6 mm in L1 to 23.4 mm in L5. The transverse diameter of the vertebral body ranged from 37 mm in L1 to 47.4 mm in L5 and the anteroposterior diameter of 27.6 mm in L1 to 33.5 mm in L5. The lumbar canal had an anteroposterior diameter that ranged from 15.9 mm in L1 to 15.5 mm in L5 and an interpedicular distance increasing from 21.54 mm in L1 to 28.42 mm in L5. The pedicle decreased in length from L1 (9.5 mm) to L5 (6.5 mm) while its width increased from 6.9 mm in L1 to 15.1 mm in L5. Its axis formed, with respect to the sagittal plane, an increasingly obtuse angle varying from 16.3 degrees in L1 to 29.1 degrees in L5 and with respect to the upper plate of the vertebral body, an increasingly acute angle (14, 2 degrees in L1 at 8.8 degrees in L5). Conclusion: The dimensions of the lumbar vertebrae in our series differ from those noted in Western populations in that they have a smaller vertebral body, a shorter, wider pedicle with an angle of inclination of the pedicle compared to the saHow to cite this paper: Tall, M., Sawadogo, M.,

Lumbar Pedicle Morphometry of Dry Vertebral Columns in Relation to Transpedicular Fixation: A Cross-Sectional Study From Central India

“…The values for the Korean [13] and Chinese [12] populations at L5 are 18.9 and 12.8 mm, respectively. At L1, the mean pedicle width was observed as 6.66 mm, similar to other Asian populations but lower than Egypt [17] and Africans [18], and the American population [16]. Among the Indian population, Central India has lower pedicle width than South India [18], Maharashtra [9], and Gujarat [19].…”

“…The Pedicle transverse external diameter (pedicle width) gradually increases from L1 to L5 in all the studies (Table 1 ). The values in all Asian populations, which include India [ 9 ], Pakistan [ 10 ], Nepal [ 11 ], China [ 12 ], Korea [ 13 ], Iran [ 14 ], and Turkey [ 15 ] are lower than the White population of the United States [ 16 ] and comparable to Egypt [ 17 ] and African population [ 18 ].…”