Lower Limb Anatomy Quiz

1. A person forcefully inverts a plantar-flexed ankle. Which ligament is most commonly injured in this mechanism?

2. The great saphenous vein normally terminates by draining directly into which vein?

3. During a single-leg stance, the pelvis drops on the unsupported side because the hip abductors on the standing side are weak. Which nerve is most likely impaired?

4. What movement does the anterior cruciate ligament primarily resist at the knee?

5. Which artery continues onto the dorsum of the foot as the dorsalis pedis artery?

6. A person cannot rise onto the toes, and examination reveals a gap in the calcaneal tendon. Which muscle group has lost its normal connection to the calcaneus?

7. Tingling over the sole worsens when tissue behind the medial malleolus is compressed. Which nerve passes through this tarsal-tunnel region?

8. A patient has numbness limited mainly to the first dorsal web space between the great and second toes. Which nerve supplies this area?

9. Following pelvic surgery, a patient has marked weakness when drawing the thigh toward the body's midline. Which nerve is most likely affected?

10. Which posterior leg muscle does not cross the knee and can therefore plantar-flex the ankle without acting on the knee joint?

11. After a fracture at the neck of the fibula, a patient develops foot drop and reduced sensation over the dorsum of the foot. Which nerve was most likely injured?

12. Within the femoral triangle, which structure lies immediately medial to the femoral artery?

13. A displaced intracapsular fracture of the femoral neck most directly threatens the principal arterial supply to the adult femoral head from which vessel?

14. Which nerve and spinal-root pairing is principally assessed by the patellar tendon reflex?

15. Which muscle is the primary flexor of the hip joint?

16. Most hamstring muscles receive motor innervation from which neural structure?