Hammertoes
A hammertoe may be flexible or rigid, and may occur on any of the lesser toes. Ligaments and tendons that have tightened cause the toe's joints to buckle, cocking the toe upward. Shoes then rub on the prominent portion of the toe, leading to inflammation or bursitis. Corns and calluses soon form.
During the early stages, a hammertoe remains flexible, meaning it will straighten when pressure is applied to the buckled area. As time passes, the toe can become permanently buckled or rigid, requiring surgery for correction. Painful calluses on the bottom of the foot may accompany rigid hammertoes because of pressure generated on the join .
See below: