Cover Journal of the American Podiatric Medical Association
Journal of the American Podiatric Medical Association
ISSN:
8750-7315
Online Publication Date:
Jun 1997

Novel methodology to obtain salient biomechanical characteristics of insole materials

LA Lavery Department of Orthopaedics, University of Texas Health Science Center in San Antonio, USA.

Search for other papers by LA Lavery in
Current site
Google Scholar
PubMed Close
,
SA Vela Department of Orthopaedics, University of Texas Health Science Center in San Antonio, USA.

Search for other papers by SA Vela in
Current site
Google Scholar
PubMed Close
,
HR Ashry Department of Orthopaedics, University of Texas Health Science Center in San Antonio, USA.

Search for other papers by HR Ashry in
Current site
Google Scholar
PubMed Close
,
DR Lanctot Department of Orthopaedics, University of Texas Health Science Center in San Antonio, USA.

Search for other papers by DR Lanctot in
Current site
Google Scholar
PubMed Close
, and
KA Athanasiou Department of Orthopaedics, University of Texas Health Science Center in San Antonio, USA.

Search for other papers by KA Athanasiou in
Current site
Google Scholar
PubMed Close
DOI:
https://doi.org/10.7547/87507315-87-6-266
Restricted access
Copyright Permission Requests
USD  $35.00
Click here to view the full Terms and Conditions

Viscoelastic inserts are commonly used as artificial shock absorbers to prevent neuropathic foot ulcerations by decreasing pressure on the sole of the foot. Unfortunately, there is little scientific information available to guide physicians in the selection of appropriate insole materials. Therefore, a novel methodology was developed to form a rational platform for biomechanical characterizations of insole material durability, which consisted of in vivo gait analysis and in vitro bioengineering measurements. Results show significant differences in the compressive stiffness of the tested insoles and the rate of change over time in both compressive stiffness and peak pressures measured. Good correlations were found between pressure-time integral and Young's modulus (r2 = 0.93), and total energy applied and Young's modulus (r2 = 0.87).

Save