Arch Mechanics and the Plantar Fascia – Quiz

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Test Questions:

1. During fast walking and running normal stress levels on the plantar fascia can approach:
A. 40% of load to failure.B. 60% of load to failure.C. 80% of load to failure.D. 100% of load to failure.

2. The Windlass Mechanism:
A. Raises and maintains arch.B. Is a non-muscular, passive effect of dynamic gait.C. Occurs broadly across all of the metatarsal heads.D. All of the above.

3. In a normal, healthy patient external rotation of the tibia will:
A. Pronate the foot.B. Cause knee osteoarthritis.C. Invert the calcaneus, raise the arch and supinate the foot.D. Occur at initial contact.

4. Approximately what fraction of foot arch stiffness and stability is provided by the plantar aponeurosis in stance?
A. 1/8B. 1/4C. 1/2D. 3/4

5. The plantar fascia serves as the primary static and dynamic support structure of the arch of the human foot.
A. TrueB. False

6. Which of the following supports the lateral column of the foot:
A. Long plantar ligamentB. Tibilias posteriorC. Spring ligamentD. Tibialis anterior

7. In normal healthy adults tension on the Achilles tendon and compression and recoil of the longitudinal arch allows storage and return of energy of approximately:
A. 30%B. 50%C. 70%D. 90%

8. Weightbearing foot shape is maintained by a web of support from which of the following:
A. Tibialis PosteriorB. Peroneus LongusC. Plantar AponeurosisD. All of the above

9. According to the Twisted Plate Theory of foot function, when the rearfoot pronates relative to a stable, flat forefoot, the foot is:
A. TwistingB. UntwistingC. PlantarflexingD. None of the above

10. The Plantar Aponeurosis has multiple insertions across the ligaments and fascia of all the Metatarsal Phalangeal Joints.
A. TrueB. False