Prospective Diagnostic Study on Perforator Localization of Anterolateral Thigh Flap With Perforator Locator

During CT scan, the patient was lying on the examination bed in a supine position, with the patient's toes facing up and fixed with an ankle fixator, the perforator was placed on the outside of the patient's thigh, and the base was extended or shortened according to the length of the patient's thigh, so that the iliac pole was located on the anterior superior spine of the patient's iliac and the patella pole was located on the lateral border of the patient's patella, and the positioning point was marked on the skin with a pen. After CT examination, the position of the perforating branch was displayed after 3D reconstruction of blood vessels by computer, and the position of the perforating branch was calculated using the computer position. The perforating branch positioning rod was moved according to the calculated scale to make it correspond to the scale, and the corresponding skin position mark was made according to the perforating branch positioning rod.