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KMID : 1150320200160010047
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Journal of Korean Society of Geriatric Neurosurgery
2020 Volume.16 No. 1 p.47 ~ p.51
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Analysis of Segmental Lumbar Lordotic Angle in Mild Low Back Pain
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Chang Hyeok
Jang Se-Youn
Song Kwan-Young
Kong Min-Ho
Kim Jung-Hee
Kim Sung-Hoon
Hong Soon-O
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Abstract
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Objective: Understanding normative curvature and variable compensation of spine is required prior to surgical correction. Previous studies reported the average local lordotic curve of each lumbar vertebrae and disc, but normative lumbar lordotic curve and lumbosacral lordotic curve are not well defined. This study was designed to study the normative range of lumbar lordosis and to understand the anatomical features of degenerative changes with comparison by age and sex.
Materials: From 1 Jan 2010 to 31 Dec 2019, we retrospectively analyzed 756 patients with simple low back pain. Lumbar Cobb’s angle was measured by L1-S1. Segmental Cobb’s angle was measured between superior endplate of upper vertebra and inferior endplate of lower vertebra; L1 segmental Cobb’s angle was measured between superior endplate of T12 and inferior endplate of L2. Lumbosacral angle was measured by Ferguson’s method.
Results: The average lordotic Cobb’s angle of each lumbar vertebrae were as followings: L1 (-2.4±6.7°), L2 (3.3±7.2°), L3 (12.2±7.9°), L4 (22.6±8.9°), L5 (31.4±6.6°). lumbosacral lordotic angle of L5-S1 was 40.2±11.8. By age group, average lordotic angle of male were followings: L1 (-3.4±6.7°), L2 (1.7±6.4°), L3 (10.6±7.0°), L4 (22.0±8.0°), L5 (31.1±6.0°). Lumbosacral lordotic angle of L5-S1 was 38.5±10.6°. Average lordotic angle of female were followings: L1 (-1.4±6.4°), L2 (4.7±7.6°), L3 (13.7±8.5°), L4 (23.2±9.7°), L5 (31.7±7.1°). Lumbosacral lordotic angle of L5-S1 was 41.7±12.7°.
Conclusion: This study is to suggest the normal range of lumbar and lumbosacral lordotic curve in patients of isolated low back pain and to re-establish the average normal curvature of lumbar vertebra since last decades.
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KEYWORD
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Low back pain, Lordosis, Kyphosis
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