This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Muscle flap with segmental pedicle is? \nSelect and explain. \nA. Gastrocnemius, B. Serratus anterior, C. Gluteus maximus, D. Saorius', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .Groin flap: It is based on superficial circumflex iliac aery which is 2-3 cm below and parallel to the inguinal ligament. Aery originates from femoral aery over medial border of the saorius and ends at anterior superior iliac spine. 1:1 rectangular flap with deep fascia is used. Secondary defect can usually be closed with sutures. It is used mainly for defects in wrist/forearm where positioning is easier. ref:SRB;s manual of surgery,ed 3,pg no 287', 'role': 'assistant'}]