A branch of the lateral femoral circumflex artery is encountered when exposing the proximal fourth of the femur and the superior lateral genicular artery in the distal fourth; these may be clamped, divided, and ligated without harm.

• 显露股骨近端四分之一段时可见旋股外侧动脉分支，而在远端四分之一可见膝上外侧动脉；这些血管可被钳夹、切断和结扎，而不会造成损害。