How are the feet structured?
Feet have a complex structure consisting of 26 bones, more than 30 small joints (where bones meet) and many muscles, tendons, ligaments and nerves.
Problems in the feet and ankles are often, but not always, associated with arthritis.
Most feet have an arch shape that spreads the body's weight evenly over many bones and joints. Feet with lower arches tend to be more flexible, while feet with higher arches are generally less flexible. High or low arches aren’t necessarily a problem but they can increase your chances of developing other foot problems.
The structure of the foot changes as we get older or if arthritis affects the foot joints, and many people will notice changes, particularly in the arch of the foot.