| Relationship between Lumbar Lordosis and Asymmetry of Facet Joints. |
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Seon Hee Cho, Jae Kwang Shim, Hyeon Min Park, Duck Mi Yoon, Won Oak Kim, Kyung Bong Yoon |
1Department of Anesthesiology and Pain Medicine, College of Medicine, The Catholic University of Korea.
2Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea. dmyoon@yumc.yonsei.ac.kr
3Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea. |
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| Abstract |
BACKGROUND
Facet joint is an important structure not only contributing to the stability of the lumbar motion segments but also causing low back pain. Hypothetically, the more lumbar lordosis decreases, the more corresponding facet joints orient axially and asymmetrically. Furthermore, the increased incidence of common diseases possessed of low back pain and radiologic findings such as wedging of vertebral body and spondylolisthesis were reported in the patients with asymmetric orientation of the facet joints and loss of lumbar lordosis at the same time. The purpose of our study is to define the relationship of asymmetry of the facet joints and loss of lumbar lordosis.
METHODS
The asymmetry and average angle of facet joints with respect to sagittal plane were measured on the magnetic resonance images. The lumbar lordosis was measured on the lateral X-ray. The relevance of lumbar lordosis and facet orientation was analyzed through linear regression.
RESULTS
There were no significant relationships between lumbar lordosis and asymmetrical orientation of facet joint.
CONCLUSIONS
The loss of lumbar lordosis did not suggest asymmetrical and axial orientation of facet joints. Further investigation into pathology and consideration into individual differences of range of motion, body mass index, age, sex might be needed. |
| Key Words:
facet joint; lumbar lordosis; back pain |
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