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目的：为治疗股骨干骨不连、骨缺损提供一种新的骨（膜）瓣供区。方法：在５０侧成人下肢标本上，解剖观察了膝上外侧动脉的起始、走行、分支分布及其与旋股外侧动脉降支的吻合类型。结果：膝上外侧动脉于股骨外侧髁上方（２．５ ± ０．５）ｃｍ处起自于腘动脉外侧壁，分出升支、横支和降支。升支和／或横支与旋股外侧动脉降支有 ３种类型的吻合，吻合率为 ９２％（４６侧），吻合处外径为（１．３ ± ０．３）ｍｍ。结论：以旋股外侧动脉降支与膝上外侧动脉升支和／或横支串连为蒂可截取股骨外侧髁骨（膜）瓣用于修复股骨干骨不连及骨缺损。
Objective: To provide a new bone (membrane) flap for the treatment of nonunion of femur and bone defects. Methods: Fifty adult adult lower extremity specimens were dissected and the anterolateral, medial and lateral branches of the lateral knee were dissected and their anastomoses were observed. Results: The lateral knee artery originated from the lateral wall of the popliteal artery above the lateral femoral condyle (2.5 ± 0.5) cm, and the ascending branch, transverse branch and descending branch were separated. There were 3 types of anastomosis between ascending branch and / or lateral branch and descending branch of lateral femoral circumflex artery. The anastomosis rate was 92% (46 sides) and the anastomotic diameter was (1.3 ± 0.3) mm. CONCLUSION: The lateral femoral condyle (flap) can be used to repair the nonunion of femur and bone defect with the descending branch of lateral femoral artery and the ascending and / or descending branch of lateral knee.