Where does the psoas major insert?

• A. Iliac Crest
• B. Lesser Trochanter of the Femur
• C. Greater Trochanter
• D. Tibial Tuberosity

Answer: (B)

The psoas major inserts on the lesser trochanter of the femur. Its tendon runs from the lumbar spine and travels under the inguinal ligament to attach there, forming the iliopsoas with the iliacus. This placement gives a powerful pull to flex the hip, which is why the lesser trochanter is the correct insertion site. The iliac crest is associated with the origin of the iliacus, not the psoas major insertion. The greater trochanter serves as the attachment for other hip muscles like gluteus medius and minimus, not the psoas major. The tibial tuberosity is the insertion point for the quadriceps tendon, far from the psoas major’s action.