Explain Trendelenburg's sign, including the muscles involved, their innervation, and the resulting gait.

Right جدة, let's go. Trendelenburg's sign occurs when the gluteus medius and gluteus minimus* muscles of one side are paralyzed. These muscles, normally innervated by the superior gluteal nerve*, are responsible for preventing the unsupported side of the pelvis from sagging during walking, thus maintaining a horizontal pelvic level. When these muscles are paralyzed, the pelvis sags on the healthy, unsupported side* when the foot on that side is off the ground. This results in a characteristic lurching gait. Send me the next one 📸