94A Kinesiology Practice Exam

The key idea is which muscle attaches to the lateral surface of the greater trochanter. The gluteus medius has its tendon inserting on the lateral aspect of the greater trochanter, making it the muscle you’re looking for. This muscle originates from the outer surface of the ilium and its tendon spreads onto that lateral facet to anchor the hip. Its primary action is hip abduction and pelvic stabilization during standing and walking. The anterior fibers can help flex and medially rotate the thigh, while the posterior fibers assist with extension and lateral rotation. Other muscles in this area don’t attach to that lateral surface: the tensor fasciae latae travels with the iliotibial band to the lateral knee; the gluteus minimus inserts on the anterior facet of the greater trochanter; and the piriformis attaches to the superior border of the greater trochanter.