An alternative classification emphasizes etiology : regurgitant murmurs from semilunar insufficiency versus ventricular filling murmurs 另一种分类则着重于其病因：由半月瓣闭锁不全所致的回流性杂音对心室充盈性杂音。
2.
In recent years , the operations of semilunar valve ablation , articular cavity inspection and the rinsing of osseous arthritis can be perfectly done under the arthroscope instrument thanks to the continuous improvement on the surgery arthroscope apparatus and better skills of the clinical surgeons 近年来由于关节镜手术器械的不断完善，以及临床手术医生技术的提高，使半月瓣切除、以及关节腔探查、骨性关节炎的冲洗等，完全能在关节镜下完成。
