Glossary

Arch - The arch of the foot is the area of the bottom of the foot between the heel pad and toe pad.

Bunion - an abnormal prominence on the inner aspect of the first metatarsal head, with bursal formation, and resulting in lateral or valgus displacement of the great toe. Bunions can be caused by congenital malformation of the bony structure of the foot or by joint disease such as rheumatoid arthritis and are aggravated by wearing high-heeled shoes with pointed toes. When the shoes do not fit properly they force the great toe toward the outer side of the foot. The result is continued pressure on the joint where the great toe articulates with the first metatarsal head. Chronic irritation causes a build-up of soft tissue and underlying bone in the area. Symptoms are swelling, redness, and pain. Mild cases can be relieved by changing to properly fitting shoes. If there is severe pain making ambulation difficult or impossible, anti-inflammatory agents may be effective. Surgical correction (bunionectomy) is indicated when all other measures fail.

Flatfoot - a condition in which one or more arches of the foot have flattened out.

Forefoot - the front part of the foot.

Fungus - a general term for a group of organisms (mushrooms, yeasts, molds, etc.) that reproduce by means of spores. Fungi are present in the soil, air, and water, but only a few species can cause disease. Although the fungal diseases develop slowly, are difficult to diagnose, and are resistant to treatment, they are rarely fatal except for systemic infections, which can be life-threatening, especially for immunocompromised patients.

Gait analysis - evaluation of the manner or style of walking, usually done by observing the individual as he walks naturally in a straight line.

Metatarsus - the part of the foot between the ankle and the toes, its skeleton being the five bones (metatarsals) extending from the tarsus to the phalanges.

Morton's neuralgia - pain in the metatarsus of the foot.

Morton's toe - tenderness or pain in the metatarsal area of the foot and in the third and fourth toes caused by pressure on a neuroma of the branch of the medial plantar nerve supplying these toes. The neuroma is produced by chronic compression of the nerve between the metatarsal heads. Called also plantar neuroma and Morton's disease, foot, or neuralgia.

Pes cavus -a foot with an abnormally high longitudinal arch, either congenital or caused by contractures or disturbed muscle balance.