Which muscle has an origin that includes the gluteal tuberosity?

• A. Vastus Lateralis
• B. Vastus Medialis
• C. Vastus Intermedius
• D. Biceps Femoris Short Head

Answer: (A)

The main idea here is understanding where muscles originate on the femur and recognizing that the gluteal tuberosity can serve as an origin point for the vastus lateralis. The gluteal tuberosity is a rough area on the posterior femur just below the greater trochanter. It provides attachment not only for the gluteus maximus but also serves as part of the origin for the vastus lateralis. From this region, fibers of the vastus lateralis spread upward to the lateral aspect of the femur and then converge into the quadriceps tendon, crossing the knee to insert via the patella and tibial tuberosity.

In contrast, the vastus medialis originates mainly from the intertrochanteric line and the medial lip of the linea aspera; the vastus intermedius arises from the anterior and lateral surfaces of the femoral shaft; and the short head of the biceps femoris originates from the linea aspera and lateral supracondylar line. None of those origins typically involve the gluteal tuberosity, which is why vastus lateralis is the correct choice.