Materials and Methods: Systematic donor site morbilidy evaluation in a prospective, uncontrolled clinical descriptive study of 33 composite anterolateral thigh free flaps in various forms to reconstruct anatomical structures or to resconstruct deep defects combined with covering the surfaces for complex soft tissue defects in lower extremities for 32 patients due to different causes in lower leg and foot area from 2014 - 2019 at Hue University of Medicine and Pharmacy.