Methods: The synovial fluid was obtained from 2OTMJs with TMJOA before arthrography and after sodium injection of sodium hyaluronate.NO was detected with nitrite indirect method.

• 方法：采用硝酸还原酶法测定20例颖下领关节骨关节病造影前、透明质酸钠下腔治疗后滑液一氧化氮水准。