Chinese Journal of Tissue Engineering Research ›› 2018, Vol. 22 ›› Issue (28): 4501-4506.doi: 10.3969/j.issn.2095-4344.0852

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Establishment of a rabbit model of early femoroacetabular impingement and its morphological characteristics

Xiong Ao, Luan Xin-yu, Lin Jian-jing, Kang Bin, Zeng Hui   

  1. Department of Bone and Joint, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Received:2018-01-31 Online:2018-10-08 Published:2018-10-08
  • About author:Xiong Ao, M.D., Associate chief physician, Department of Bone and Joint, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Supported by:

    the Scientific Research Project of Health and Family Planning Commission of Shenzhen Municipality, No. 201501024

Abstract:

BACKGROUND: Femoroacetabular impingement (FAI) is a disease causing pain and dysfunction of hip joint in young active populations and has been paid more and more attention in recent years. However, its pathogenesis 
and optimized treatment have not been fully understood.
OBJECTIVE: To establish an animal model of early FAI in New Zealand rabbits and investigate the feasibility of this model for the study on FAI by morphological observation.
METHODS: Twelve New Zealand rabbits were given unilateral femoral osteotomy with adduction 30° and external rotation 45° to establish the animal model of early FAI, and were then euthanized at 4 and 16 weeks in batches. Hip X-ray films were taken for comparison, the hip specimens were obtained for gross observation, then hematoxylin-eosin staining and toluidine blue staining were performed to observe the cartilage morphology in the area of impingement, and the cartilage degeneration was evaluated by Mankin scores.
RESULTS AND CONCLUSION: Some low-density round areas were visible at the subchondral bone of the femoral head-neck conjunction in partial modeling femurs by X-ray. Gross specimen indicated the signs of cartilage injury at the impinging area. Histological observation also proved the cartilage degeneration at the femoral head-neck conjunction and acetabular labrum. The Mankin scores of the surgical side were significantly higher than those of the control side. Therefore, the animal model of early FAI in New Zealand rabbit is established successfully, which facilitates researches on the pathogenesis and treatment of FAI.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Acetabulum, Osteotomy, Osteoarthritis, Models, Animal, Tissue Engineering

CLC Number: