The document summarizes anatomy and common injuries of the foot, ankle, and lower leg. It describes the 26 bones, 38 joints, ligaments, muscles, and four arches of the foot. The most commonly injured joint is the ankle, with sprains being most frequent. Other common injuries include blisters, calluses, athlete's foot, turf toe, arch strains, fractures, plantar fasciitis, shin splints, stress fractures, heel spurs, compartment syndrome, and Achilles tendon injuries. Special tests are used to evaluate injuries and determine if referral is needed.