Trendelenburg's sign is negative in an Inter-Trochanteric fracture because of:
(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.
Gluteus medius
Gluteus maximus
Gluteus minimus
Tensor fascia lata
Pelvis & Injuries