Hammer toe is a type of dislocation of the joints in the toes that is caused by toe injury, high-arching feet, arthritis or wearing shoes that don't fit appropriately, according to Healthline. Other causes include pressure from bunions and tightened tendons or ligaments in the foot.
Hammer toe may cause mild symptoms like calluses and corns or a toe that bends downwards, according to Healthline. If the condition worsens, it can cause the affected toes to take on a claw-like appearance or make it difficult to walk. It can also cause the inability to wiggles the toes or flex the foot. Pads, medications and wearing shoes that fit properly may correct the condition. Severe cases of hammer toe may require surgery to correct the condition and restore functionality of the toe.