Edema (star), synovial lining cells, and vascularization were often increased in OA synovial membrane biopsy samples but were not specific for disease severity.

• 浮肿（黑星处），滑膜表层细胞和血管增殖经常在骨性关节炎患者的生检标本中观察到，但与疾病的严重程度不太相关。