Adductor Magnus Flashcards

Examine adductor magnus anatomy, including its two functional parts, pelvic attachments, dual innervation, hip actions, and adductor hiatus.

Card 1 of 30Question

Which compartment of the thigh contains the adductor magnus?

The medial compartment of the thigh.

In This Section

1. Which compartment of the thigh contains the adductor magnus?

The medial compartment of the thigh.

2. What is the general shape of the adductor magnus muscle?

A large, broad, triangular muscle extending from the pelvis to the femur.

3. What are the two principal functional parts of adductor magnus?

The adductor part and the hamstring part.

4. Which pelvic structures provide the origin of the adductor part of adductor magnus?

The inferior pubic ramus and ramus of the ischium.

5. Where does the hamstring part of adductor magnus originate?

The ischial tuberosity.

6. Where does the adductor part of adductor magnus insert?

Along the gluteal tuberosity, linea aspera, and medial supracondylar line of the femur.

7. Where does the hamstring part of adductor magnus insert?

The adductor tubercle on the medial femoral epicondyle.

8. Which tendon connects the hamstring part of adductor magnus to its distal femoral attachment?

The tendon of the hamstring part, which attaches to the adductor tubercle.

9. What is the primary action of the adductor part of adductor magnus?

Adduction of the thigh at the hip joint.

10. Which sagittal plane movement can the anterior fibers of adductor magnus assist?

Hip flexion.

11. What is the principal action of the hamstring part of adductor magnus?

Extension of the thigh at the hip joint.

12. Which nerve supplies the adductor part of adductor magnus?

The posterior division of the obturator nerve.

13. Which spinal nerve roots contribute to the obturator nerve supplying the adductor part?

L2, L3, and L4.

14. Which nerve supplies the hamstring part of adductor magnus?

The tibial division of the sciatic nerve.

15. Which spinal nerve roots contribute to the tibial division of the sciatic nerve?

L4, L5, S1, S2, and S3.

16. What distinguishes adductor magnus innervation from that of most other medial thigh muscles?

Its adductor and hamstring parts receive motor supply from different nerves.

17. Which artery provides a major blood supply to adductor magnus?

The profunda femoris artery through its perforating branches.

18. Which additional arteries contribute to the blood supply of adductor magnus?

Branches of the obturator and medial circumflex femoral arteries.

19. Which venous system primarily drains adductor magnus?

The profunda femoris venous system.

20. Which muscles lie superficial to the anterior portion of adductor magnus?

Adductor longus and adductor brevis.

21. Which major muscle group lies posterior to adductor magnus?

The hamstring muscles of the posterior thigh.

22. Which part of adductor magnus forms part of the floor of the adductor canal?

The adductor part of adductor magnus.

23. What is the adductor hiatus?

An opening in the distal adductor magnus between its muscular attachment and hamstring tendon.

24. Which blood vessels pass through the adductor hiatus?

The femoral artery and femoral vein.

25. What does the femoral artery become after passing through the adductor hiatus?

The popliteal artery.

26. Which anatomical region receives the femoral vessels after they pass through the adductor hiatus?

The popliteal fossa.

27. How do perforating branches of the profunda femoris artery reach the posterior thigh?

They pass through openings in the aponeurotic attachments of adductor magnus.

28. Why is the hamstring part of adductor magnus considered functionally related to the hamstrings?

It originates from the ischial tuberosity and extends the hip through tibial nerve innervation.

29. What motor deficit may result from obturator nerve injury affecting adductor magnus?

Weakness of thigh adduction, particularly when other adductor muscles are also affected.

30. How is the adductor function of adductor magnus assessed clinically?

By testing thigh adduction against resistance, although other adductor muscles also contribute.