A callus is an area of thickened skin that forms as a response to repeated friction, pressure, or other irritation. Since repeated contact is required, calluses are most often found on your feet because of frequent walking and poorly fitting footwear.
This is a condition in which the upward bending motion of the ankle joint is limited.
Hammer, claw and mallet toe
These are toe deformities wherein the toes are bent into an odd position.