Foot and Ankle

Question 1

Functional requirements of the foot and ankle

Answer 1

1. Must transfer load from the lower extremity
2. Withstand high loads
3. Be durable
4. Provide traction for movement

Question 2

Couple kinematics

Answer 2

1. Tibia internal rotation -> subtalar joint eversion/pronation
2. Tibia external rotation -> subtalar joint supination

Question 3

Truss Mechanism

Answer 3

Assembly of elements that creates a rigid structure

Question 4

Hallus Valgus

Answer 4

Big toe -> Lateral deviation
Medial Sesamoid -> Medical Deviation.

RF:
1. Genes, Sex, Age, ligamentous laxity, footwear, excessive loading

Treatments:

1. Exostectomy
2. Mcbride soft tissue procedure
3. Osteotomy
4. Arthrodesis
5. Resection arthroplasty