To explore the clinical effect of anterolateral thigh flap with fascia lata in repairing complex abdominal wall defects after removal of infected abdominal mesh.

From April 2020 to April 2023， 7 patients with complex abdominal wall defects caused by removal of abdominal infected mesh in Department of Burns and Plastic Surgery，988th Hospital of Joint Logistics Support Force of PLA were selected， including 4 males and 3 females， aged 38~66 years. There were 4 cases of abdominal hernia mesh exposure infection， and 3 cases of mesh exposure infection after abdominal tumor resection and patch repair. After admission， the deep cavity wound with abdominal wall defect extending to the peritoneum was formed after debridement and vacuum sealing drainage. The wound area was 10 cm×6 cm~15 cm×10 cm， and the aponeurosis defect area was 3 cm×3 cm~7 cm×5 cm. The anterolateral thigh flap with fascia lata was designed and cut. The flap area was 10 cm×6 cm~15 cm×10 cm， and the fascia lata area was 4 cm×3 cm~8 cm×6 cm. The fascia lata was used to repair the abdominal wall aponeurosis tissue defect， and the flap was used to repair the skin and soft tissue defect. The donor site was directly sutured or grafted with abdominal medium thickness skin graft. The survival of the flap and the wound healing in the donor recipient area were observed after operation. Follow up to observe the condition of skin flap， abdominal shape， abdominal wall hernia and quadriceps hernia.

The flap blood circulation of 7 patients was good and survived smoothly. 6 patients' wounds in the recipient area healed smoothly， and 1 patient's wounds in the recipient area appeared exudation in the late stage， and healed after wound expansion and suture. All donor site wounds healed of 7 patients. The patients were followed up for 12-18 months. The flaps were slightly bloated， and the appearance of the abdomen was good. There were no abdominal wall hernia and quadriceps hernia. The treatment results were satisfactory.

The anterolateral thigh flap with fascia lata can strengthen the abdominal wall， repair the complex abdominal wall defect caused by the removal of abdominal hernia infection patch， and prevent the formation of postoperative abdominal wall hernia and quadriceps hernia.