Reduction of Abnormal Foot Pressures in Diabetic Neuropathy Using a New Polymer Insole Material
- Andrew J M Boulton, M.B. M.R.C.P,
- Christopher I Franks, Ph.D. C.Eng.,
- Roderic P Betts, Ph.D. C.Eng.,
- Thomas Duckworth, M.B. F.R.C.S. and
- John D Ward, M.D. F.R.C.P.
- Departments of Medicine, Royal Hallamshire Hospital Sheffield, United Kingdom
- Medical Physics and Clinical Engineering, Royal Hallamshire Hospital Sheffield, United Kingdom
- Orthopaedic Surgery, Royal Hallamshire Hospital Sheffield, United Kingdom
- Address reprint requests to Dr. A. J. M. Boulton, Department of Diabetes, University of Miami (D-1), P.O. Box 016960, Miami, Florida 33101.
Abstract
The precise pressures and loads under 69 neuropathic feet have been measured during walking using a modified microprocessor-controlled optical system. Abnormally high pressures were demonstrated in 94% of feet with a history of foot ulceration, with pressures as high as 20–30 kg × cm−2 under the forefoot. All subjects were also studied using a new visco-elastic polymer material recently used for insole manufacture. A reduction in pressure was demonstrated that was proportional to peak pressure (linear regression line correlation coefficient of 0.91; P < 0.001). We conclude that this material causes a significant reduction in the abnormally high pressures recorded under neuropathic feet, and should provide a useful insole for the management of patients at risk of neuropathic foot ulceration.
- Copyright © 1984 by the American Diabetes Association











