Preparing a blunt contusion model of rabbit skeletal muscle under different blow strengths

doi:10.3969/j.issn.2095-4344.2977

Abstract

Abstract: BACKGROUND: In current studies regarding skeletal muscle blunt contusion model, rats are often taken as the experimental object. The authors believe that rabbits are the better experimental object to observe the macroscopic and imaging changes after blunt contusion.

OBJECTIVE: Based on the self-made heavy-duty smashing instrument as the experimental basis, to replicate the skeletal muscle injury model according to different strike heights, which is expected to provide a reference basis for the subsequent replication of the rabbit gastrocnemius blunt contusion model.

METHODS: Thirty-three New Zealand rabbits were randomly divided into four groups: normal group (n=3), 75 cm strike group (n=10), 50 cm strike group (n=10), 25 cm strike group (n=10). Except for the normal group, all strikes were performed with different strengths. The severity of skeletal muscle damage after different strikes was compared through gross observation, hematoxylin-eosin staining, Masson staining, and ultrasound imaging.

RESULTS AND CONCLUSION: The 50 cm height blow can cause moderate damage to the skeletal muscle, and the natural recovery time is over 21 days, which is suitable for the establishment of skeletal muscle blunt contusion model. The 75 cm height blow is likely to cause fractures, resulting in more deaths. The 25 cm height blow can cause mild damage that can be recovered within 7 days, which is not suitable for the establishment of skeletal muscle injury model.

Key words: skeletal muscle, blunt contusion, heavy-duty instrument, two-dimensional ultrasound, imaging, Masson staining, rabbit, experiment

CLC Number:

Liu Xing, Wei Xiaohan, Deng Jie, Li Zhongming . Preparing a blunt contusion model of rabbit skeletal muscle under different blow strengths[J]. Chinese Journal of Tissue Engineering Research, 2021, 25(2): 196-200.

Figures/Tables 6

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