Accuracy and durability of Semmes-Weinstein monofilaments: what is the useful service life?

Diabetes Research and Clinical Practice
Lawrence A LaveryBijan Najafi

Abstract

To evaluate the accuracy and effective service life of commercially available Semmes-Weinstein monofilaments with repetitive loading. We obtained 6 brands of Semmes-Weinstein monofilaments (SWM) from commercial vendors identified from the Internet and the federal registry. Five monofilaments of each brand were subjected to repeat loading cycles, allowed to rest over night and loaded again the next day. First, sets of five monofilaments were loaded 25 times for each of five days. Then sets of five monofilaments were subjected to 200 loading cycles a day for 15 days. A testing jig ensured each SWM was loaded perpendicular to a digital pressure plate. The buckling force was measured via the pressure plate to determine failure loads. Several statistical techniques were used to examine the behavior of the monofilaments over repeated loadings: time series analysis, ANOVA and nonparametric comparisons of load distributions. The monofilaments tested were neither precise nor accurate. The plasticity of filaments increased with repeated loadings resulting in lower bending forces. Individual and average bending forces varied widely both within and between monofilament brands. All monofilaments showed a typical material failure pattern. In...Continue Reading

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Citations

Jan 30, 2014·Journal of Diabetes and Metabolic Disorders·Shahram BarazSeyed Mahmoud Latifi
Apr 15, 2014·Journal of the American Podiatric Medical Association·Todd O'Brien, Joseph Karem
Apr 8, 2015·Microsurgery·Anja S RuhdorferBertram Hölzl
Jun 22, 2015·Applied Health Economics and Health Policy·Iain WillitsAndrew Sims
Jun 21, 2017·American Journal of Speech-language Pathology·Nicole M EtterKirrie J Ballard
Feb 23, 2020·International Archives of Occupational and Environmental Health·C J M PooleG Frost

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