英语语法分析

Results:The incidence of the infrapatellar plica was 71%(284 cases) of the 400 knees examined.

结果：400例膝关节镜手术中发现有髌下皱襞结构的284例（71%）；

The infrapatellar branch of descending genicular artery accompanied closely with saphenous nerve.

膝降动脉髌下支和隐神经髌下支呈紧密的伴行关系。

Purpose To investigate the curative effect of warming acupuncture on a lesion of infrapatellar fat pad.

目的观察温针灸治疗髌下脂肪垫损伤的效果。