Prevention and Early Intervention for Diabetes Foot Problems
7. Special Footwear for the Insensate Foot continued...
Properly constructed and well-fitting shoes and shoe inserts can minimize localized stresses by redistributing forces during walking.
Besides helping patients keep feet healthy, shoes and orthoses also can help prevent diabetes complications. Investigators in a recent study found that after healing of the initial ulcer, re-ulceration occurred after one year in 58 percent of patients who resumed wearing their own footwear, compared to 28 percent of those who wore therapeutic footwear29.
Another study compared the prevalence and severity of foot deformities and the development of ulceration in people with diabetes after a great toe amputation. The investigators found that because of altered pressure distribution, the foot with great toe amputation developed more frequent and more severe deformities of the lesser toes and metatarsophalangeal joints compared to the other intact foot. Because these patients were at high risk for subsequent ulceration, the use of special inserts and footwear to protect the feet was highly recommended30.
Prescription Footwear and the Medicare Shoe Benefit
Professionally fitted shoes and prescription footwear are an important part of the overall treatment of the insensate foot because they aid in preventing limb loss. Footwear should relieve areas of excessive pressure, reduce shock and shear, and accommodate, stabilize, and support deformities.
Shoes should be long enough, and have room in the toe area and over the instep. Shoes with laces allow adjustment for edema and deformities. Most people with early neuropathic changes can wear cushioned commercial footwear such as walking or athletic shoes. Some people also may need the pressure areas redistributed with custom orthotics that often require depth footwear.
Custom-molded shoes, depth shoes, inserts, and shoe modifications can be fitted and furnished by a podiatrist, orthopedic foot surgeon, orthotist, or pedorthist.
Depth-inlay shoes provide more room for toe deformities and for the insertion of customized insoles. Extra-wide shoes provide more room for bunions and other abnormalities. Rocker sole shoes reduce pressure under metatarsal heads and toes. They are particularly useful for reducing the risk of ulceration in patients with a stiff and rigid first metatarsal joint.
Since 1993, the Medicare shoe benefit has made special footwear available to more patients than ever before. To obtain coverage, patients must have physician certification that they are at high risk for ulceration or amputation, receive a written footwear prescription from a podiatrist or other qualified physician, and obtain the footwear from a qualified provider or supplier who will then file the appropriate claim forms31.