Histological examination showed statistically significant reductions in synovial hyperplasia , pannus formation and cartilage erosion as well as bone destruction in the PDT treated ankles than those in the contralateral side of these animals.

• PDT治疗组滑膜增生、血管翳形成及软骨破坏、骨破坏和总的病理评分比对照组好 ;