The foot and ankle comprise a complex arrangement of small bones, joints, muscles, tendons, and ligaments designed to balance and propel the body during locomotion. Without proper support and function of the foot and ankle, abnormal forces can transfer to the lower extremity, thereby placing undue stress on the musculoskeletal system and predisposing it to injury. This book identifies the most common pathological conditions related to the musculoskeletal system of the ankle and foot and guides the user to differentially diagnose these dysfunctions.