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: Anatomy
Defect in Gluteus Maximus lead to all of the following, EXCEPT? 
Select and explain. 
A. Positive Trendelenburg's sign, B. Extension defect, C. Difficulty in straightening from the bending position, D. Difficulty rising from the sitting position
A: Positive Trendelenburg's sign
Answer: A: Positive Trendelenburg's sign 
Explanation: Positive trendelenburg's sign is seen in superior gluteal nerve (Gluteus mediusminimus) injury and not in Inferior gluteal nerve injury (Gluteus maximus). The gluteus maximus is the most powerful hip extensor and is crucial for movements requiring large forces. It functions primarily between the flexed and the standing positions, as when rising from the sitting position, straightening from the bending position, walking uphill and upstairs, running and jumping.