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find Author "ZHOU Xiaofan" 1 results
  • Vascular anatomy and clinical application of type Ⅲ perforator flap based on the oblique branch of lateral circumflex femoral artery

    Objective To investigate the vascular anatomy and the clinical application of type Ⅲ perforator flap based on the oblique branch of lateral circumflex femoral artery on skin soft tissue defect at the limbs. Methods Vascular anatomy of anterolateral thigh flap was performed on a 43-year-old male cadaver perfused with red latex, and the travel and perforating distribution of the oblique branches of lateral circumflex femoral artery were observed. A retrospective case series study was used to analyze the clinical data of 12 patients with skin soft tissue defects of the extremities admitted between January 2018 and September 2019, including 9 males and 3 females; aged from 18 to 65 years, with a median age of 32 years. The injury site included 7 cases of foot and ankle, 3 cases of calf, and 2 cases of hand. The wound size was ranged from 9 cm×7 cm to 28 cm×10 cm. The time from injury to operation was 1-2 weeks, with an average of 10 days. All patients were repaired with type Ⅲ perforator flap based on the oblique branch of lateral circumflex femoral artery, including 3 cases of single-leaf flap, 6 cases of double-leaf flaps, and 3 cases of tri-leaf flaps. The flap ranged from 15 cm×5 cm to 28 cm×10 cm. The donor site was directly sutured or repaired with local flap. The flap survival and complications were observed after operation. ResultsThe results of vascular anatomy showed that the lateral femoral circumflex artery sent out transverse branches, oblique branches, and descending branches. The oblique branches sent out multiple muscle perforating branches along the way, the perforating branches passed through the anterolateral femoral muscle, and the blood supply scope was the skin of the anterolateral femoral region. The clinical results showed that all flaps survived completely and the incisions healed by first intension. There was no complication such as vascular crisis. All 12 patients were followed up 3-12 months, with an average of 7 months. The appearance and texture of the flap were good. At last follow-up, according to the British Medical Research Council (BMRC) Society for neurological trauma standard, the sensory of the flap reached S2 in 9 cases and S3 in 3 cases. Linear scar remained in the donor area, without pain, pruritus, tactile allergy, and other discomfort. The patients and their families were satisfied. Conclusion Type Ⅲ perforator flap based on the oblique branch of lateral circumflex femoral artery is a reliable method for repairing the soft tissue defect of the limbs, with reliable blood supply, large cutting area, various types of perforator flaps.

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