Which landmark is identified as Structure F in the hip region?

• A. Obturator foramen
• B. Ischial tuberosity
• C. Greater trochanter
• D. Lesser trochanter

Answer: (C)

In the hip region, Structure F is the greater trochanter. This is a large bony prominence on the proximal femur on the lateral side, just below the femoral neck. It’s a major attachment site for hip muscles (like the gluteus medius and minimus), and its prominence makes it a readily identifiable landmark on bones and radiographs.

Obturator foramen is an opening in the pelvis, not on the femur. The ischial tuberosity is the sit bone on the pelvis, located inferiorly and posteriorly. The lesser trochanter is a smaller projection on the medial/posterior aspect of the femur below the neck. Among these, the greater trochanter is the prominent hip landmark labeled as Structure F.