Iliofemoral Ligament Flashcards

Explore the iliofemoral ligament, including its Y-shaped structure, bony attachments, capsular reinforcement, and role in hip stability.

Card 1 of 25Question

Which joint is reinforced by the iliofemoral ligament?

The hip joint.

In This Section

1. Which joint is reinforced by the iliofemoral ligament?

The hip joint.

2. What type of ligament is the iliofemoral ligament?

A strong capsular ligament formed by a thickening of the fibrous hip joint capsule.

3. On which aspect of the hip joint is the iliofemoral ligament located?

The anterior and superior aspects of the hip joint capsule.

4. What is another name for the iliofemoral ligament?

The Y ligament of Bigelow.

5. Why is the iliofemoral ligament described as Y-shaped?

Its proximal attachment divides distally into superior and inferior bands.

6. What is the proximal bony attachment of the iliofemoral ligament?

The anterior inferior iliac spine and adjacent acetabular rim.

7. Which femoral landmark receives the distal attachments of the iliofemoral ligament?

The intertrochanteric line of the femur.

8. Where does the superior band of the iliofemoral ligament attach distally?

The superior part of the intertrochanteric line near the greater trochanter.

9. Where does the inferior band of the iliofemoral ligament attach distally?

The inferior part of the intertrochanteric line near the lesser trochanter.

10. What are the two principal bands of the iliofemoral ligament?

The superior and inferior bands, also called the lateral and medial arms.

11. What is the primary mechanical function of the iliofemoral ligament?

To limit excessive extension of the hip joint.

12. During which hip movement does the iliofemoral ligament become particularly taut?

Hip extension, especially near the end of its normal range.

13. How does the iliofemoral ligament contribute to maintaining an upright standing posture?

It passively resists hip hyperextension, reducing the muscular effort needed for standing.

14. Which rotational movement of the hip is restricted by the iliofemoral ligament?

External rotation of the femur.

15. Which band of the iliofemoral ligament is particularly important in resisting external rotation?

The superior band.

16. Which band of the iliofemoral ligament is especially important in restricting hip extension?

The inferior band.

17. What happens to the iliofemoral ligament during hip flexion?

It becomes relatively relaxed, allowing greater movement at the hip.

18. How does the iliofemoral ligament contribute to hip joint stability?

It reinforces the anterior capsule and limits excessive movement of the femoral head.

19. Which three major capsular ligaments reinforce the hip joint?

The iliofemoral, pubofemoral, and ischiofemoral ligaments.

20. How does the iliofemoral ligament compare in strength with the other major hip capsular ligaments?

It is generally regarded as the strongest ligament of the hip joint.

21. Which muscle lies superficially near the superior attachment of the iliofemoral ligament?

The rectus femoris, particularly its straight head near the anterior inferior iliac spine.

22. Which muscle lies anterior to much of the iliofemoral ligament?

The iliopsoas muscle.

23. What is the relationship between the iliofemoral ligament and the hip joint capsule?

Its fibers blend directly with and strengthen the fibrous capsule.

24. Why is anterior hip dislocation relatively uncommon compared with posterior dislocation?

The strong anterior capsular structures, particularly the iliofemoral ligament, resist anterior displacement.

25. What may result from damage to the iliofemoral ligament?

Increased anterior hip instability and excessive extension or external rotation.