Trendelenburg sign protocol can be identified by which observation?

Trendelenburg sign protocol can be identified by which observation?

• A. The patient performs a standing toe-raise test.
• B. The patient lies on the back and raises legs.
• C. The patient walks with a neutral pelvis.
• D. The patient stands on one leg for several seconds while pelvic alignment is observed from behind.

Answer: (D)

This tests how the hip abductors function during single‑leg stance. When the stance leg’s gluteus medius and minimus are strong, they contract to keep the pelvis level as you balance on one leg. If those muscles are weak, the pelvis on the opposite side drops, producing the recognizable tilt called the Trendelenburg sign. To identify it, you have the patient stand on one leg for several seconds and observe the pelvis from behind; a visible drop on the non-stance side indicates a positive sign. Other actions don’t assess this same mechanism: toe raises evaluate calf muscle power, lifting legs while lying on the back is a straight‑leg raise, and walking with a neutral pelvis may not reveal the pelvic drop that occurs with single‑leg stance.

This tests how the hip abductors function during single‑leg stance. When the stance leg’s gluteus medius and minimus are strong, they contract to keep the pelvis level as you balance on one leg. If those muscles are weak, the pelvis on the opposite side drops, producing the recognizable tilt called the Trendelenburg sign. To identify it, you have the patient stand on one leg for several seconds and observe the pelvis from behind; a visible drop on the non-stance side indicates a positive sign.

Other actions don’t assess this same mechanism: toe raises evaluate calf muscle power, lifting legs while lying on the back is a straight‑leg raise, and walking with a neutral pelvis may not reveal the pelvic drop that occurs with single‑leg stance.