Patellar Ligament Flashcards

Explore patellar ligament anatomy, from its bony attachments and fiber structure to knee extension, surrounding bursae, and common injuries.

Card 1 of 28Question

Where is the patellar ligament located?

On the anterior aspect of the knee, extending from the patella to the tibial tuberosity.

In This Section

1. Where is the patellar ligament located?

On the anterior aspect of the knee, extending from the patella to the tibial tuberosity.

2. What is another commonly used name for the patellar ligament?

The patellar tendon.

3. What type of connective tissue forms the patellar ligament?

Dense regular connective tissue composed predominantly of type I collagen fibers.

4. What is the proximal attachment of the patellar ligament?

The apex and adjacent inferior margin of the patella.

5. What is the distal attachment of the patellar ligament?

The tibial tuberosity on the anterior surface of the proximal tibia.

6. Which muscle tendon is functionally continuous with the patellar ligament?

The quadriceps femoris tendon through its attachment to the patella.

7. What is the primary function of the patellar ligament?

To transmit quadriceps force from the patella to the tibia during knee extension.

8. Which functional mechanism includes the quadriceps tendon, patella, and patellar ligament?

The knee extensor mechanism.

9. What is the predominant orientation of collagen fibers in the patellar ligament?

Longitudinal, aligned with the direction of tensile loading.

10. What is the relationship between the patellar ligament and the knee joint cavity?

The ligament lies anterior to the joint and outside its synovial cavity.

11. Which adipose structure lies immediately deep to the patellar ligament?

The infrapatellar fat pad, also called Hoffa's fat pad.

12. Which bursa separates the distal patellar ligament from the anterior tibia?

The deep infrapatellar bursa.

13. Which bursa lies between the skin and the distal patellar ligament?

The superficial infrapatellar bursa.

14. Which fibrous structures lie along the medial and lateral margins of the patellar ligament?

The medial and lateral patellar retinacula.

15. Which arterial network supplies the patellar ligament?

The peripatellar arterial anastomosis, including branches of the inferior genicular arteries.

16. Which veins provide venous drainage from the patellar ligament region?

Veins accompanying the genicular arterial network, draining toward the popliteal venous system.

17. Which nerve supplies an important sensory branch to the anterior knee region near the patellar ligament?

The infrapatellar branch of the saphenous nerve.

18. What happens to the patellar ligament during active quadriceps contraction?

It experiences tensile loading as quadriceps force is transmitted to the tibia.

19. Which region of the patellar ligament is most commonly affected by patellar tendinopathy?

The proximal portion near the inferior pole of the patella.

20. What is the common clinical term for patellar tendinopathy associated with repetitive jumping?

Jumper's knee.

21. What functional deficit commonly results from complete rupture of the patellar ligament?

Loss of active knee extension against gravity, often with inability to perform a straight leg raise.

22. What abnormal patellar position may occur after complete patellar ligament rupture?

Patella alta, an abnormally high position of the patella.

23. Which traction apophysitis affects the tibial attachment of the patellar ligament in adolescents?

Osgood-Schlatter disease.

24. Which traction-related condition affects the inferior patellar attachment in growing adolescents?

Sinding-Larsen-Johansson syndrome.

25. What happens when the patellar ligament is tapped during a knee-jerk reflex examination?

The quadriceps is briefly stretched, triggering reflex knee extension.

26. Which spinal nerve roots are assessed by the patellar tendon reflex?

L2 to L4, particularly L4, through the femoral nerve.

27. Which portion of the patellar ligament may be harvested for anterior cruciate ligament reconstruction?

The central third, commonly harvested with patellar and tibial bone blocks.

28. Which imaging modalities can evaluate patellar ligament tears and tendinopathy?

Musculoskeletal ultrasound and magnetic resonance imaging (MRI).