Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (13): 2059-2064.doi: 10.3969/j.issn.2095-4344.2014.13.016

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Percutaneous annulus fibrosus needle puncture versus muscular annulus fibrosus knife penetration for establishing a rabbit model of intervertebral disc degeneration

广西柳州市工人医院,广西壮族自治区柳州市  545005   

  1. Liuzhou Workers Hospital, Liuzhou 545005, Guangxi Zhuang Autonomous Region, China
  • Received:2014-01-28 Online:2014-03-26 Published:2014-03-26
  • Contact: Li Bing, Ph.D., Chief physician, Liuzhou Workers Hospital, Liuzhou 545005, Guangxi Zhuang Autonomous Region, China
  • About author:He Qing, Studying for master’s degree, Attending physician, Liuzhou Workers Hospital, Liuzhou 545005, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    Natural Science Foundation of Guangxi Zhuang Autonomous Region of China, No. 2010GXNSFA013257

Abstract:

BACKGROUND: Studies have shown that the establishment of disc degeneration model provides experimental support for the treatment of intervertebral disc degeneration, but the current study still lacks of recognized optimal animal models.
OBJECTIVE: To compare the differences of percutaneous annulus fibrosus needle puncture with muscular annulus fibrosus knife penetration in establishing a rabbit model of intervertebral disc degeneration.
METHODS: The New Zealand rabbit models of intervertebral disc degeneration were established by percutaneous annulus fibrosus needle puncture and muscular annulus fibrosus knife penetration. At 4, 8 and
16 weeks after puncture, lumbar disc degeneration and histopathological conditions were observed using magnetic resonance imaging and histopathology examination.
RESULTS AND CONCLUSION: At 4 weeks after the puncture, T2-weighted image signal reduced, darken, and disc height decreased in rabbit nucleus pulposus of the two groups. T2 signal intensity scores were lower in the percutaneous annulus fibrosus needle puncture group compared with the muscular annulus fibrosus knife penetration group (P < 0.05). At 8 weeks after puncture, T2 signal intensity scores were increased in both groups. T2 signal intensity scores were lower in the percutaneous annulus fibrosus needle puncture group compared with the muscular annulus fibrosus knife penetration group (P < 0.05). At 16 weeks after puncture, T2 signal intensity reached a peak, and no significant difference was detected between the two groups. Intervertebral space became significantly narrowed. The brightness of the disc became black. There were no significant differences between 
the two groups. The time of operation was shorter in the percutaneous annulus fibrosus needle puncture group than that in the muscular annulus fibrosus knife penetration group (P < 0.05). Infection rate was 5.6% in the muscular annulus fibrosus knife penetration group. No infection was observed in the percutaneous annulus fibrosus needle puncture group. Results verified that the time of establishing a rabbit model of intervertebral disc degeneration using percutaneous annulus fibrosus needle puncture was short, and the infection rate was low. Thus, its effects were better than muscular annulus fibrosus knife penetration.


中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程


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Key words: intervertebral disk, skeleton, cartilage, fibrocartilage

CLC Number: