Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (13): 2411-2415.doi: 10.3969/j.issn.1673-8225.2010.13.033

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Mechanical imbalances and abnormal stress in a goat model of cervical kyphosis

Fang Jia-hu1, Jia Lian-shun2, Zhou Xu-hui2, Song Li-jun1, Li Xiang1, Wang Yi-jin3   

  1. 1 Jiangsu Provincial People’s Hospital, Nanjing   210029, Jiangsu Province, China; 2 Changzheng Hospital, Second Military Medical University of Chinese PLA, Shanghai   200003, China; 3 Shanghai Institute of Biomechanical Engineering, Shanghai University, Shanghai   201800, China
  • Online:2010-03-26 Published:2010-03-26
  • Contact: Li Xiang, Chief physician, Associate professor, Jiangsu Provincial People’s Hospital, Nanjing 210029, Jiangsu Province, China lixiang2003@medmail.com.cn
  • About author:Fang Jia-hu☆, Doctor, Attending physician, Jiangsu Provincial People’s Hospital, Nanjing 210029, Jiangsu Province, China fjh4508@163.com

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Abstract:

BACKGROUND: The incidence of cervical kyphosis occurs with bio-mechanical behavior changes. However, bio-mechanics research of animal model of cervical kyphosis has been rarely reported.
OBJECTIVE: To analyze biomechanical changes in a goat model of cervical kyphosis.
METHODS: To simulate the formation of cervical kyphosis cause, a goat model of cervical kyphosis was made. Biomechanics of fresh cervical specimens of the cervical kyphosis goats and normal goats was compared to measure three-dimensional range of motion (ROM) and bending stiffness.
REULTS AND CONCLUSION: Compared with normal specimens, the deformity range of cervical kyphosis goats was from C2 to C5, and their ROM in the C2/3 to C4/5 segment was obviously reduced. ROM differences between two groups in C5/6 segment was significantly reduced, similar in the C6/7 segment, even slight greater than normal specimens. The rotation motion was significantly reduced, nearly limited. The bending stiffness of the kyphosis group was increased significantly in the C2/3 to C4/5 segment, while almost the same as normal group in the C5/6 and C6/7 segments. With the formation of kyphosis, mechanical imbalances and the presence of abnormal stress in the deformity range resulted in abnormal cervical joint fusion, leading to cervical biomechanical changes.

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