The hammertoes are a minor deformity in the foot in the sagittal plane. It is named for the shape taken by the fingers, in a flexed position similar to a hammer. It may be isolated or associated with other deformities and the 2nd and 3rd fingers of the foot are usually affected. It is a pathology that affects approximately 2 to 20% of the population.
The main cause is a muscular imbalance: the flexor digitorum longus muscle is shortened, while the extensor muscles are weak together with the intrinsic muscles of the foot, which causes the structure of the foot to be progressively modified to the position of flexion.
The main symptoms of the hammer toe are: pain in the head of the phalanges, calluses (due to constant friction with the shoe), inflammation or redness, among others.
When the deformity is very severe it is corrected with a percutaneous foot surgery, having previously removed the corns and warts.