Tibial Tuberosity Flashcards

Study the tibial tuberosity, including its location, bony features, patellar ligament attachment, development, biomechanics, and clinical anatomy.

Card 1 of 22Question

What is the tibial tuberosity?

A prominent roughened bony elevation on the anterior surface of the proximal tibia.

In This Section

1. What is the tibial tuberosity?

A prominent roughened bony elevation on the anterior surface of the proximal tibia.

2. Where is the tibial tuberosity located relative to the tibial condyles?

Immediately inferior to the medial and lateral tibial condyles.

3. Which ligament inserts onto the tibial tuberosity?

The patellar ligament.

4. Where does the patellar ligament originate proximally?

From the apex and adjacent inferior margins of the patella.

5. Which muscle group transmits force to the tibial tuberosity through the patellar ligament?

The quadriceps femoris muscle group.

6. What is the principal biomechanical function of the tibial tuberosity?

It anchors the knee extensor mechanism to the tibia.

7. What movement results from quadriceps traction on the tibial tuberosity?

Extension of the leg at the knee joint.

8. How does the tibial tuberosity relate to the anterior border of the tibial shaft?

The anterior border of the tibial shaft continues inferiorly from the tuberosity.

9. Is the tibial tuberosity an articular surface?

No. It is a nonarticular bony prominence for ligament attachment.

10. Which bursa lies between the distal patellar ligament and the anterior tibia?

The deep infrapatellar bursa.

11. Which bursa lies between the skin and the superficial aspect of the distal patellar ligament?

The superficial infrapatellar bursa.

12. What is the developmental classification of the tibial tuberosity?

A traction apophysis that develops in association with the proximal tibial epiphysis.

13. What mechanical force primarily influences development of the tibial tuberosity apophysis?

Repetitive tensile loading from the patellar ligament.

14. What is Osgood-Schlatter disease?

Traction apophysitis of the tibial tuberosity in skeletally immature individuals.

15. Which age group is most commonly affected by Osgood-Schlatter disease?

Physically active adolescents during periods of skeletal growth.

16. What causes pain at the tibial tuberosity in Osgood-Schlatter disease?

Repetitive traction of the patellar ligament on the developing tibial tuberosity apophysis.

17. What bony change may remain after Osgood-Schlatter disease resolves?

A persistent prominence of the tibial tuberosity.

18. What is a tibial tuberosity avulsion fracture?

A fracture in which patellar ligament traction separates the tibial tuberosity from the proximal tibia.

19. What is a common mechanism of tibial tuberosity avulsion fracture in adolescents?

Sudden, powerful quadriceps contraction during jumping or landing.

20. What functional impairment may result from a displaced tibial tuberosity avulsion fracture?

Weakness or loss of active knee extension.

21. Which arteries contribute to the blood supply of the tibial tuberosity region?

Branches of the genicular arterial network, particularly the inferior genicular arteries.

22. What is tibial tubercle osteotomy?

A procedure that repositions the tibial tuberosity to alter patellar tracking or patellofemoral loading.