Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (5): 663-668.doi: 10.3969/j.issn.2095-4344.2014.05.002

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Medical TH adhesive embolism for establishing a rabbit model of ischemic necrosis of lunate bone

Lu Yun-xiang, Chen Yu-xian, Zhuang Ze, Ren Jian-hua, Peng You, Shi De-hai, Wang Kun, Li Zhi-yong   

  1. Department of Joint Surgery and Orthopedic Trauma, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
  • Revised:2014-01-02 Online:2014-01-29 Published:2014-01-29
  • Contact: Li Zhi-yong, M.D., Associate chief physician, Associate professor, Master’s supervisor, Department of Joint Surgery and Orthopedic Trauma, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
  • About author:Lu Yun-xiang, Studying for master’s degree, Department of Joint Surgery and Orthopedic Trauma, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
  • Supported by:

    the Guangdong Provincial Medical Science Foundation in China, No. A2012173

Abstract:

BACKGROUND: Kienböck disease lacks of suitable animal models, which are similar to the pathological process of avascular necrosis of human lunate bone.

OBJECTIVE: To establish a new animal model of Kienböck disease using medical TH adhesive embolism and to explore the rationality of model establishment.
METHODS:A total of 30 healthy adult New Zealand rabbits, male or female, were selected. Using self-control method, the rabbits were randomly assigned to experimental sides and control sides. By drilling in the center of the lunate bone, 0.2 mL of medical TH glue was injected three times. An equal volume of physiological saline was injected into the center of the lunate bone on the control side. X-ray examination, general observation, Micro-CT measurement of bone, and tissue pathology detection were conducted at 4, 8 and 12 weeks.
RESULTS AND CONCLUSION:Gross specimen, X-ray and histological results showed that ischemic necrosis of the lunate bone on the experimental side was visible at 8 weeks after model induction. The ischemic necrosis of the lunate bone became more typical at 12 weeks. Among the Micro-CT microscopic parameters of trabecular bone, trabecular bone density parameters bone volume fraction and the number of trabecular bone were significantly lower on the experimental side than those on the control side (P < 0.05). Spatial parameters of trabecular bone significantly increased. Trabecular separation and structure model index on the experimental  side were significantly greater than those on the control side. Results suggested that ischemic necrosis of the lunate bone appeared on the experimental side at 8 weeks after injection of medical TH glue. Rabbit models of ischemic necrosis of the lunate bone can be established at 12 weeks. Thus, alterations, which were similar to ischemic necrosis of human lunate bone, appeared, such as blood transportation damage in the lunate bone, trabecular bone fracture, and empty lacuna, when surrounding tissues were not obviously injured.


中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


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Key words: models, animal, lunate bone, osteonecrosis, histology

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