A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration

黃 聰仁(Tsung-Jen Huang), 柯 俊宏(Jyuhn H. Ke), 李 怡春(Yi-Chun Li), Steven A. Lavender, Jordan H. Trafinow, Gunnar B. J. Andersson

Research output: Contribution to journalArticle

Abstract

The purpose of this study was to evaluate the relationship of facet geometry (facet angle and tropism) to the water content of the lumbar intervertebral disc. Magnetic resonance (MR) imaging of 51 subjects, 22 women and 29 men, less than 50 years of age, were analyzed. Axial MR images were used to measure the facet angles and then determine facet tropism. For each intervertebral disc, water content was calculated by obtaining a T2 relaxation time from pulse sequence parameters with TR/TE of 2,000/30;100. There are three trends noted in the lower lumbar spine: 1) Decreased water content is found in the intervertebrl disc (IVD) of the lower lumbar spine. 2) Facet angles increase in the lower lumbar spine. 3) Tropism is found more frequently in the lower lumbar spine. A significant reduction of intradiscal water content was noted in the presence of disc degeneration (p<0.0001) or in the group with facet angles greater than 30º (p=0.015). There was a mild correlation of intradiscal water content to the magnitude of facet angles (r=0.3 1, p<0.00 1) for the entire group, but not at each level, L1-2 to L5-S1 (p>0.05). Subjects with tropism also had no significant relation to the amount of water content at each level (p>0.05). It was concluded that the risk of disc degeneration is increased whenthe facet angle is more than 30º , and a degenerating disc occurs with a decreasing of the water content.
Original languageEnglish
Pages (from-to)180-186
Number of pages7
JournalJournal of Orthopedic Surgery Taiwan
Volume12
Issue number3
Publication statusPublished - 1995

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Intervertebral Disc Degeneration
Magnetic Resonance Spectroscopy
Tropism
Water
Spine
Intervertebral Disc
Magnetic Resonance Imaging

Keywords

  • Facet angle
  • Tropism
  • Water content
  • Intervertebral disc
  • Magnetic resonance imaging

Cite this

黃聰仁(Tsung-Jen H, 柯俊宏(Jyuhn H K, 李怡春(Yi-Chun L, Lavender, S. A., Trafinow, J. H., & Andersson, G. B. J. (1995). A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration. Journal of Orthopedic Surgery Taiwan, 12(3), 180-186.

A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration. / 黃聰仁(Tsung-Jen Huang); 柯俊宏(Jyuhn H. Ke); 李怡春(Yi-Chun Li); Lavender, Steven A.; Trafinow, Jordan H.; Andersson, Gunnar B. J.

In: Journal of Orthopedic Surgery Taiwan, Vol. 12, No. 3, 1995, p. 180-186.

Research output: Contribution to journalArticle

黃聰仁(Tsung-JenH, 柯俊宏(JyuhnHK, 李怡春(Yi-ChunL, Lavender, SA, Trafinow, JH & Andersson, GBJ 1995, 'A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration', Journal of Orthopedic Surgery Taiwan, vol. 12, no. 3, pp. 180-186.
黃聰仁(Tsung-JenH, 柯俊宏(JyuhnHK, 李怡春(Yi-ChunL, Lavender SA, Trafinow JH, Andersson GBJ. A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration. Journal of Orthopedic Surgery Taiwan. 1995;12(3):180-186.
黃聰仁(Tsung-Jen Huang) ; 柯俊宏(Jyuhn H. Ke) ; 李怡春(Yi-Chun Li) ; Lavender, Steven A. ; Trafinow, Jordan H. ; Andersson, Gunnar B. J. / A MR Study of the Influence of Lumbar Facet Geometry in Intervertebral Disc Degeneration. In: Journal of Orthopedic Surgery Taiwan. 1995 ; Vol. 12, No. 3. pp. 180-186.
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abstract = "The purpose of this study was to evaluate the relationship of facet geometry (facet angle and tropism) to the water content of the lumbar intervertebral disc. Magnetic resonance (MR) imaging of 51 subjects, 22 women and 29 men, less than 50 years of age, were analyzed. Axial MR images were used to measure the facet angles and then determine facet tropism. For each intervertebral disc, water content was calculated by obtaining a T2 relaxation time from pulse sequence parameters with TR/TE of 2,000/30;100. There are three trends noted in the lower lumbar spine: 1) Decreased water content is found in the intervertebrl disc (IVD) of the lower lumbar spine. 2) Facet angles increase in the lower lumbar spine. 3) Tropism is found more frequently in the lower lumbar spine. A significant reduction of intradiscal water content was noted in the presence of disc degeneration (p<0.0001) or in the group with facet angles greater than 30º (p=0.015). There was a mild correlation of intradiscal water content to the magnitude of facet angles (r=0.3 1, p<0.00 1) for the entire group, but not at each level, L1-2 to L5-S1 (p>0.05). Subjects with tropism also had no significant relation to the amount of water content at each level (p>0.05). It was concluded that the risk of disc degeneration is increased whenthe facet angle is more than 30º , and a degenerating disc occurs with a decreasing of the water content.",
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AU - 李, 怡春(Yi-Chun Li)

AU - Lavender, Steven A.

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N2 - The purpose of this study was to evaluate the relationship of facet geometry (facet angle and tropism) to the water content of the lumbar intervertebral disc. Magnetic resonance (MR) imaging of 51 subjects, 22 women and 29 men, less than 50 years of age, were analyzed. Axial MR images were used to measure the facet angles and then determine facet tropism. For each intervertebral disc, water content was calculated by obtaining a T2 relaxation time from pulse sequence parameters with TR/TE of 2,000/30;100. There are three trends noted in the lower lumbar spine: 1) Decreased water content is found in the intervertebrl disc (IVD) of the lower lumbar spine. 2) Facet angles increase in the lower lumbar spine. 3) Tropism is found more frequently in the lower lumbar spine. A significant reduction of intradiscal water content was noted in the presence of disc degeneration (p<0.0001) or in the group with facet angles greater than 30º (p=0.015). There was a mild correlation of intradiscal water content to the magnitude of facet angles (r=0.3 1, p<0.00 1) for the entire group, but not at each level, L1-2 to L5-S1 (p>0.05). Subjects with tropism also had no significant relation to the amount of water content at each level (p>0.05). It was concluded that the risk of disc degeneration is increased whenthe facet angle is more than 30º , and a degenerating disc occurs with a decreasing of the water content.

AB - The purpose of this study was to evaluate the relationship of facet geometry (facet angle and tropism) to the water content of the lumbar intervertebral disc. Magnetic resonance (MR) imaging of 51 subjects, 22 women and 29 men, less than 50 years of age, were analyzed. Axial MR images were used to measure the facet angles and then determine facet tropism. For each intervertebral disc, water content was calculated by obtaining a T2 relaxation time from pulse sequence parameters with TR/TE of 2,000/30;100. There are three trends noted in the lower lumbar spine: 1) Decreased water content is found in the intervertebrl disc (IVD) of the lower lumbar spine. 2) Facet angles increase in the lower lumbar spine. 3) Tropism is found more frequently in the lower lumbar spine. A significant reduction of intradiscal water content was noted in the presence of disc degeneration (p<0.0001) or in the group with facet angles greater than 30º (p=0.015). There was a mild correlation of intradiscal water content to the magnitude of facet angles (r=0.3 1, p<0.00 1) for the entire group, but not at each level, L1-2 to L5-S1 (p>0.05). Subjects with tropism also had no significant relation to the amount of water content at each level (p>0.05). It was concluded that the risk of disc degeneration is increased whenthe facet angle is more than 30º , and a degenerating disc occurs with a decreasing of the water content.

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