Methods The origin, course, branches and anastomosis of vessels at the external femoral condyle and anterior side of the distal femur were observed on 40 adult cadaver lower limb specimens.

• 方法 在40侧成人下肢标本上，解剖观测股骨外侧髁和股骨下段前面的血管来源、走行、分支和吻合情况。