Elsevier

The Foot

Volume 10, Issue 3, September 2000, Pages 124-130
The Foot

ORIGINAL ARTICLE
Evaluation of the gait analysis FSCAN pressure system: clinical tool or toy?

https://doi.org/10.1054/foot.1999.0536Get rights and content

Abstract

Knowledge of the forces and pressures under the foot is important in the assessment of foot pathology. Several techniques and systems for taking such measurements have been reported and much attention has been devoted to the evaluation of the accuracy of these systems. The type of system discussed in this work is the FSCAN (Tekscan) in-shoe pressure measurement. Large errors due to electromechanical effects on the output of the system raise serious questions about the reliability of this system, but valuable information such as pressure pattern recognition can still be obtained within the limitations of the system.

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    Measured force values with Pedar® insoles increased up to 17% during 3-h walking trials (Arndt, 2003), by 43.2% during a static loading experiment and by 19% during an 8-h repeated load application (Hurkmans et al., 2006). Up to 30% lower peak forces during walking trials were observed for F-Scan insoles (Nicolopoulos et al., 2000). El Kati observed a rapid decrease in sensitivity in running trials and a frequent need for calibration with the F-Scan insoles (El Kati et al., 2010).

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    The program automatically divided the plantar regions: all divisions were checked by two trained researchers and, if necessary (eventually), corrected manually. The in-shoe pressure system presents good information about relative distribution of plantar forces while their absolute values have been questioned (Nicolopoulos et al., 2000; Rosenbaum and Becker, 1997; Woodburn and Helliwell, 1996). The force plate is considered the most accurate dynamic measurements of force (Cobb and Claremont, 1995): thus, the force plate was used to calibrate (post-test) the plantar pressure data test by test.

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