This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gluteal Region, Subject name: Anatomy
[{'content': 'Trendelenburg test is done for: \nSelect and explain. \nA. Gluteus medius, minimus, B. Gluteus maximus, minimus, C. Gluteus maximus, medius, D. Gluteus maximus, medius, minimus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Gluteus medius, minimusRef : BDC 6th ed. vol. II / 69-70; Keith L. Moore 5th ed. /619-621* Trendelenburg's sign is found in people with weak or paralyzed abductor muscles of the hip, namely gluteus medius and gluteus minimus.* Superior gluteal nerve, if injured, paralyses the 3 muscles: gluteus medius, gluteus minimus and tensor fascia latae and hence lead to positive Trendelenberg test.* These 3 muscles, especially the gluteus medius raises the unsupported hip during walking, which otherwise will be pulled down by the gravity.* In Trendelenberg test this action of gluteus medius (superior pelvic tilt of contralateral hip) is absent and we actually observe that there is a downward drop of the unsupported hip- due to unopposed action of gravity.* This leads to Lurching gait in the patient.Also Know* Trendelenburg test becomes positive inp congenital dislocation of hip/ long standing fracture of neck of femur.* Inferior gluteal nerve supplies gluteus maximus.", 'role': 'assistant'}]