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Objective 1, through anatomical studies of fresh cadavers, observing groin flap blood supply and its axis of cardiovascular origin, direction, vessel diameter, in order to provide fresh specimens of anatomy anatomical data and intuitive picture for surgical flap design and operation to provide more detailed anatomical basis. Two to explore groin flap graft repair of hand a large area of ??the wound and the clinical efficacy of surgical techniques to further improve the clinical value of the flap. Methods 1, select 12 side fresh adult specimens after carotid artery or femoral artery perfusion after red latex microdissection groin area, observe groin flap blood supply, blood vessels key observations to understand the origin, course, distribution and the positional relationship with the surrounding blood vessels and measure the diameter of iliac artery. The experimental data by the precision of 0.02mm vernier caliper measurement data obtained results using spss13.0 statistical software processing. 2, based on the research in anatomy, clinical select the appropriate cases, the application of the iliac groin flap graft repair of skin and soft tissue defects in the hand in 16 cases, clinical follow-up in May to 12 months, through the supply, subjective and objective assessment by the district its clinical efficacy analysis. Results 1 anatomical study: ① groin flap blood supply for the iliac artery was observed 12 side specimens, one side of the iliac artery agenesis, 11 specimens visible side iliac artery. ② iliac artery origin there is some variation in the observed samples, 75.00% (9/12) originated in the femoral artery, originated in the iliac artery and circumflex femoral artery of each side, which accounted for 8.33% , one side of the specimen iliac artery agenesis. ③ circumflex iliac artery diameter was 1.48 ± 0.41mm, iliac dry superficial epigastric artery diameter averaged 2.02mm. ④ iliac artery, iliac dry superficial epigastric artery, superficial epigastric artery in the femoral artery to the start point of the vertical distance from the femoral artery was 13.93 ± 8.71mm, 17.55 ± 7.35mm, 26.93 ± 13.18mm, three vessels starting at arrangement on the grounds of the femoral artery and the first outside and inside, top-down order. 2, the clinical application of Results: The clinical application of 16 cases of flap, a minimum area of ??7cm × 5cm, the maximum area of ??15cm × 9cm; 14 cases successfully survived two cases of venous crisis occurs, flap survival after timely treatment, survival rate of 100%; 16 cases of patients were followed up in May to December, flap blood supply, texture, good elasticity, appearance, good rate of 93.75 percent flap, flap feeling partially restored. 16 patients were leaving only linear donor site scar, only one case of paresthesia, infection, abdominal hernia and other complications. Conclusions groin flap blood supply for the iliac artery, iliac artery relatively constant diameter suitable graft, pedicle there is a pattern, cut the simple, no damage to deep tissue, can be used to graft wound repair. Groin flap graft repair of hand wound with flap area, diameter matching is good, fit is simple, does not damage the main blood vessels and nerves, postoperative survival rate is high, results were satisfactory; donor hidden, you can direct suture, fewer postoperative complications and secondary deformities, etc., in line with flap surgery \
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