A hammertoe is a contracture, or bending, of the toe at the first joint of the digit, called the proximal interphalangeal joint. This bending causes the toe to appear like an upside-down V when looked at from the side. Any toe can be involved, but the condition usually affects the second through fifth toes, known as the lesser digits. Hammer toes are more common in females than males.
Causes
The APMA says that hammertoe can result from a muscle Hammer toes imbalance in the foot that puts undue pressure on the joints, ultimately causing deformity. Inherited factors can contribute to the likelihood of developing hammertoe. Arthritis, stroke or nerve damage from diabetes or toe injuries such as jamming or breaking a toe can affect muscle balance in the foot, leading to hammertoe. The Mayo Clinic says that wearing improper shoes often causes hammertoe. Shoes that squeeze the toes, such as those with a tight toe box or with heels higher than two inches, can put too much pressure on the toe joints.

The symptoms of hammertoe include a curling toe, pain or discomfort in the toes and ball of the foot or the front of the leg, especially when toes are stretched downward. Thickening of the skin above or below the affected toe with the formation of corns or calluses. Difficulty finding shoes that fit well. In its early stages, hammertoe is not obvious. Frequently, hammertoe does not cause any symptoms except for the claw-like toe shape.
Diagnosis
The treatment options vary with the type and severity of each hammer toe, although identifying the deformity early in its development is important to avoid surgery. Your podiatric physician will examine and X-ray the affected area and recommend a treatment plan specific to your condition.
Non Surgical Treatment
Treating hammertoe involves straightening the toe, making tendons in the toes flexible again, and preventing the problem from returning. Some simple treatments include splinting the toe to keep it straight and to stretch the tendons of the foot. Using over-the-counter pads, cushions or straps to decrease discomfort Exercising the toes to relax the foot tendons (a session with a physical therapist may help you get started with foot exercises) Wearing shoes that fit properly and allow toes plenty of room to stretch out.
Surgical Treatment
If you are unable to flex your toe, surgery is the only option to restore movement. Surgery is used to reposition the toe, remove deformed or injured bone, and realign your tendons. Surgery is normally done on an outpatient basis, so you can return home on the day of your surgery.