目的：制作不同程度关节软骨损伤的动物模型，对关节软骨损伤后软骨再生修复的组织学及超微结构进行系统研究。
Objective: We set several animal models with articular injury in various degrees and studied systemically on the histology and ultra-microscopic structure of cartilaginous regeneration after injury.
修复受损伤的膝盖是一件很复杂的事情，因为关节上的软骨是很难再生的，在一些情况下对关节进行整体更换是唯一可行的办法。
Fixing damaged knees is tricky because the form of cartilage found in the joints does not easily regenerate and in some cases total joint replacement is the only option.
目的通过引导性骨再生和组织工程软骨移植研究长骨骨缺损的修复机制。
Objective Study the mechanism of the healing of bone defect after transplantation of the tissue-engineered cartilage into the bone defects and with guided bone regeneration tubes.
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