Hyperextension of the toes in either direction causes a large part of the foot to dorsiflex, or bend backwards, which results in a hardening of the muscles of the foot and a painful muscle cramp, according to WebMD. Extreme cases can lead to plantar fascitis, warns Everyday Health.
There are certain risk factors that make a person more likely to experience foot cramps when bending the toes, notes WebMD. These include being overweight, wearing shoes that are too narrow, or walking barefoot on hard surfaces for extended periods of time. Walking for long periods of time in shoes with an inflexible sole also increases the likelihood of foot cramps.
Everday Health recommends remedying the cramp with a gentle foot massage or a soak in warm water. A home remedy suggested by WebMD is to create a warm pack by filling a sock with uncooked rice and placing it in the microwave for a few minutes. Then place the rice-filled sock on the floor, and roll it back and forth along the bottom of the foot to relax the muscles and alleviate the pain of the cramp. Drinking plenty of water; consuming foods rich in potassium, magnesium and calcium; and stretching help prevent foot cramps.