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Journal of Korean Neurosurgical Society > Volume 25(4); 1996 > Article
Journal of Korean Neurosurgical Society 1996;25(4): 842-845.
Paraspinal Muscles Wasting in the Patients wih Chronic Low Back Pain.
Jong Heon Hwang, Young Baeg Kim, Jeong Taik Kwon, Byung Kook Min, Sung Nam Hwang, Duck Young Choi
Department of Neurosurgery, College of Medicine, Chung-Ang University Seoul, Korea.
The purpose of this study is to investigate whether paraspinal muscle wasting occurs in association with chronic low back pain(LBP) and to know whether low back muscle exercise is effective for abating chronic low back pain. Cross sectional areas(CSA) of lumbar vertebral bodies and paraspinal muscles were measured using CT at the level of the fouth lumbar vertebral body in 37 patients(23 males 14 females) with acute low back pain and in 44 patients(20 males, 24 females) with chronic low back pin. The results were as follows; 1) The mean age of the patients with chronic LBP were higher than those with acute LBP. 2) The CSAs of L4 vertebral bodies were correlated significantly with body weight and the CSAs of L4 vertebral bodies, erector spinae and psoas muscles were larger in males than in females. 3) The volumes of the paraspinal muscles were significantly reduced in patients with chronic LBP compared to a cute LBP. These changes can cause erector spinae and psoas muscle weakness and disuse atrophy and thereby predispose to spinal instability and progressive dysfuction.
Key Words: Chronic low back pain; Muscle atrophy; Paraspinal muscle
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