膝部knee的上界平髌骨上缘上方2横指处,下界平胫骨粗隆高度,可分为膝前区和膝后区。腘动脉在腘窝的分支有膝上内侧动脉medial superior genicular a . 、膝上外侧动脉lateral superior genicular a . 、膝中动脉middle genicular a . 、膝下内侧动脉medial inferior genicular a .和膝下外侧动脉lateral inferior genicular a . ,分布于膝关节。腘深淋巴结deep popliteal l ......