All 14 cases were given a misdiagnosis of suppurative arthritis, rheumatoid arthritis, acute synosvitis, osteoarthritis respectively before arthroscopy.

• 结果14例病人术前均误诊，分别诊断为化脓性关节炎、类风湿性关节炎、急性滑膜炎、骨性关节炎。