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Journal of the Korean Academy of Rehabilitation Medicine 2002;26(4):439-444.
The Relationship between the Lower Lumbar Disc Herniation and the Morphology of the Iliolumbar Ligaments Using Magnetic Resonance Imaging.
Ahn, Kyung Hoi , Kim, Hee Sang , Yun, Dong Hwan , Hong, Jang Hyeok
Department of Rehabilitation Medicine, Kyung Hee University College of Medicine, Korea.
자기공명영상을 통한 장요인대 형태와 요추 추간판 탈출증과의 관련성
안경회, 김희상, 윤동환, 홍장혁
경희대학교 의과대학 재활의학교실
Abstract

Objective
This research aimed to define the relationship between the lower lumbar disc herniation and the morphology of the iliolumbar ligaments using magnetic resonance imaging.


Method
24 male and 36 female patients were classified into two groups according to their disc herniation grade- those in whom the L5-S1 disc was less herniated than L4-5 disc, those in whom the L5-S1 disc was more herniated than the L4-L5 disc on magnetic resonance images. The lengths of iliolumbar ligaments were measured on T1- weighted coronal images. The angles of iliolumbar ligaments were measured on T1-weighted axial images.


Results
The length of iliolumbar ligament was not different between L4-L5 disc herniation and L5-S1 disc herniation. The degree of iliolumbar ligament angle difference (asymmetry of direction) at L5-S1 disc herniation was more deviated in paracentral disc herniation compared with central disc herniation.


Conclusion
The morphology of the iliolumbar ligament, especially its asymmetry of direction, may be a factor influencing the development of disc herniation at L5-S1. (J Korean Acad Rehab Med 2002; 26: 439-444)

Key Words: Iliolumbar ligament, Disc herniation, Magnetic resonance imaging


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