This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'In a post polio case, ilio-tibial tract contracture is likely to result in \nSelect and explain. \nA. Extension at the hip and knee, B. Extension at the hip, C. Flexion at the hip and the knee, D. Extension at the knee', 'role': 'user'}, {'content': 'Answer: B \nExplanation: * Tensor fasciae latae is one of the anterior thigh muscles. * It originates from the external lip of the iliac crest & descends to inse into the iliotibial tract. The iliotibial tract inses into the anterolateral surface of the lateral tibiai condyle. * Innervation is provided by the superior gluteal nerve (L4, L5). * Its actions are varied: * Abduction, flexion and medial rotation at hip * Weak extension of knee joint', 'role': 'assistant'}]