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KMID : 0615720130300040045
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Jouranl of Korean Acupuncture and Moxibustion society
2013 Volume.30 No. 4 p.45 ~ p.53
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The Findings of Relation between Cross-sectional Area of Lumbar Paraspinal Muscle and Prognosis in Patients of Acute and Chronic Low Back Pain Patients
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Nam Ji-Hwan
Lee Chong-Hwan
Lee Seul-Ji
Kim Kie-Won
Lee Min-Jung
Jun Jae-Yun
Lim Su-Jin
Hong Nam-Jung
Song Joo-Hyun
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Abstract
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Objectives : The purpose of this study was to evaluate the relationship between cross-sectional areas of the paraspinal and psoas muscles with low back pain.
Methods : We assessed the cross-sectional area of the psoas and paraspinal muscles at the superior part of L4 level and vertebral body of L4 of 132 patients who were hospitalized with a chief complaint of low back pain at Jaseng Hospital of Korean Medicine from January 2013 to April 2013. After calculating the mean psoas area, we divided the patients into 2 groups by whether the psoas cross section was larger or smaller than the mean, and compared the admission period, verbal numeric rating scale(NRS) of low back pain(LBP), and improvement of verbal NRS of LBP. We also subcategorized the patients into acute and chronic groups according to the duration period, and compared the cross-sectional area of the psoas and paraspinal muscles.
Results : Although analyses of the verbal NRS of LBP, and improvement of verbal NRS of LBP between groups with larger and smaller psoas cross section areas showed no significant difference, the admission period was significantly shorter in the group with larger psoas cross section areas. There was no significant difference in analyses of cross section areas in the acute and chronic groups. Of the possible prognostic variables, improvement of verbal NRS of LBP showed no correlation, while the admission period displayed a significant correlation. The cross-sectional area of the psoas and paraspinal muscles divided by the area of the vertebral body of L4 had a significant negative correlation with age.
Conclusions : The cross-sectional area of the psoas and paraspinal muscles were correlated with the admission period in LBP patients, and the cross-sectional area of the surrounding muscles divided by the area of the L4 vertebral body was negatively correlated with age.
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KEYWORD
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Low back pain, Psoas muscle, Paraspinal muscle, Cross-sectional area of muscle
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