A preliminary comparison of prosthetic socket liner strain determined using digital image correlation and finite element analysis

14 Jul 20264 min read0 viewsJournal Feed

GIST (Key Takeaways)

by Mohammadreza Freidouny, Michael L. Madigan, Carson Squibb, Masaki Hada, Abbie Bailey, Trevor Johnson, Brian Kaluf, Michael K. Philen Improving prosthetic socket fit remains an important issue among prosthesis users.
Understanding strains at limb-socket interface may help prosthetists improve socket fit. Previous studies have used finite element analysis (FEA) to predict stresses and strains at limb-socket interface. However, the selection of FEA model material properties as well as the validation of FEA strain results remain challenging.
Digital image correlation (DIC) is a well-accepted optical technique that is widely used in experimental mechanics to noninvasively measure strains and can be used to validate FEA predictions. The goal of this feasibility study was to demonstrate the use of DIC to measure prosthesis liner strains of a unilateral transtibial prosthesis user and conduct a preliminary comparison of these strains with those estimated from an FEA model. One participant with a transtibial residual limb was recruited.
Liner strains of the residual limb during two stepping tasks were measured with DIC.

Clinical Editorial

PLOS ONE (Medicine) published a clinical update in Research Highlights on 14 Jul 2026.

The item focuses on A preliminary comparison of prosthetic socket liner strain determined using digital image correlation and finite element analysis.

Review the original article for the full source wording and details.