The gluteus medius is a muscle located on the outer surface of the pelvis. It plays a crucial role in stabilizing the hip and pelvis during activities such as walking, running, and standing on one leg. This muscle helps to abduct the thigh, moving it away from the body, and assists in the rotation of the hip. In addition to its primary functions, the gluteus medius is important for maintaining proper posture and balance. Weakness in this muscle can lead to issues such as hip pain or instability, affecting overall mobility and increasing the risk of injuries during physical activities.