Glossary

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

Acrokeratosis verruciformis - a hereditary dermatosis characterized by the presence of numerous flat wart-like papules on the dorsal aspect of the hand, foot, elbow, and knee.

Ankle - the part of the leg just above the foot; the joint between the leg and the foot. It is a hinge joint formed by the junction of the tibia and fibula with the talus, or ankle bone. The bones are cushioned by cartilage and connected by a number of ligaments, tendons, and muscles that strengthen the joint and enable it to be moved. Because it is in almost constant use, the ankle is particularly susceptible to injuries, such as sprain and fracture. It is also often one of the first joints to be affected by arthritis or gout.

Ankle clonus - a series of abnormal reflex movements of the foot, induced by sudden dorsiflexion, causing alternate contraction and relaxation of the triceps surae muscle.

Athlete's foot - a fungal infection of the skin of the foot; called also tinea pedis. It causes itching and often blisters and cracks, usually between the toes. Causative agents are Candida albicans, Epidermophyton floccosum, and species of Trichophyton, which thrive on warmth and dampness. If not arrested, it can cause a rash and itching in other parts of the body as well. It is likely to be recurrent, since the fungus survives under the toenails and reappears when conditions are favorable. Although Athlete''s foot is usually little more than an uncomfortable nuisance, its open sores provide excellent sites for more serious infections. Early treatment and health care supervision insure correct diagnosis and prevention of complications. Specific diagnosis is made by microscopic examination or culture of skin scrapings for the fungus.

Nearly one-fourth of all the bones in your body are in your feet. A broken (fractured) bone in your forefoot or in one of your toes is often painful, but rarely disabling. Most of the time, these injuries heal without operative treatment.

There are two types of foot fractures: stress fractures and general bone fractures. Stress fractures usually occur in the bones of the forefoot extending from the toes to the middle of the foot. Stress fractures are like tiny cracks in the bone surface. They can happen with sudden increases in exercise (such as running or walking for longer distances or times), improper training techniques, or a change in surfaces.

Most other types of fractures extend through the bone, and are called bone fractures. They may be stable, in which there is no shift in bone alignment, or displaced, in which the bone ends no longer line up properly. Bone fractures usually result from trauma, such as dropping a heavy object on your foot, or from a twisting injury. If the fractured bone does not break through the skin, it is called a closed fracture. If the fracture does break through the skin, it is called an open fracture.

Because of the complex structures in the foot, there are some other, more specific types of fractures that can occur. For example, the fifth metatarsal, known as the little or pinky toe, is susceptible to a variety of different fractures. The relationship between the ankle and the foot can be compromised by an ankle-twisting injury, which may tear the tendon that attaches to this bone and pull a small piece of the bone away. A more serious injury in the same area is known as a Jones fracture, which occurs near the base of the bone and disrupts its blood supply. This injury may take longer to heal or require surgery.

Common symptoms for any type of foot fracture includes pain, swelling, and sometimes bruising. Be sure to seek medical attention for any suspected foot fracture.




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