This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis & Injuries, Subject name: Orthopaedics
Trendelenburg's sign is negative in an Inter-Trochanteric fracture because of: 
Select and explain. 
A. Gluteus medius, B. Gluteus maximus, C. Gluteus minimus, D. Tensor fascia lata
D: Tensor fascia lata
Answer: D: Tensor fascia lata 
Explanation: (d) Tensor fascia lata- In cases of fracture intertrochanteric femur both gluteus muscles become ineffective as these are inserted in greater trochanter. Tensor fascia lata (TFL) which is inserted through the iliotibial tract on to the lateral condyle of tibia will still be in a position to affect some abduction thereby causing a negative trendelenburg test.