This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
[{'content': 'A 67 year old patient has been given a course of antibiotics through gluteal intramuscular injections after a major abdominal surgery. To avoid damage to the sciatic nerve, during injection needle is to be inseed in which of the following area ? \nSelect and explain. \nA. Midway between ischial tuberosity and lesser trochanter, B. Over sacrospinous ligament, C. Midpoint of the gamelli muscles, D. Upper lateral quadrant of gluteal region', 'role': 'user'}, {'content': "Answer: D \nExplanation: Inseion of needle at upper lateral quadrant of gluteal region doesn't injure nerves Needle inseion at lower medial quadrant damages sciatic and pudendal nerves Needle inseion at sacrospinous ligament damages pudendal nerves and vessels Needle inseion at the midway between ischial tuberosity and lesser trochanter damages sciatic nerve, posterior femoral cutaneous nerves. Ref: Gray's Anatomy The Anatomical Basics of Clinical Practice 41 e pg 1373.", 'role': 'assistant'}]