Pathological changes in the tissues in group A and B rabbits were compared after haematoxylin and eosin staining (x100). Compared with group A, the collagen fibre in the ligament tissue of group B rabbits formed a wave-like structure with no broken collagen fibres. Fibroblasts increased in number, but there were no visible changes in the nucleus. Fibroblasts exhibited a regular oval shape and were evenly distributed, which represents a recovered ligament tissue.