Effect of Foot Orthotics on Plantar Fascia Strain

NewsBot · Oct 9, 2014

Members do not see these Ads. Sign Up.
The Effects of Orthotic Intervention on Multi-Segment Foot Kinematics and Plantar Fascia Strain in Recreational Runners
Jonathan Sinclair, Josh Isherwood, and Paul J. Taylor
Journal of Applied Biomechanics; in press

Chronic injuries are a common complaint in recreational runners. Foot orthoses have been shown to be effective for the treatment of running injuries but their mechanical effects are still not well understood. This study aims to examine the influence of orthotic intervention on multi-segment foot kinematics and plantar fascia strain during running. Fifteen male participants ran at 4.0 m.s-1 with and without orthotics. Multi-segment foot kinematics and plantar fascia strain were obtained during the stance phase and contrasted using paired t-tests. Relative coronal plane range of motion of the midfoot relative to the rearfoot was significantly reduced with orthotics (1.0°) compared to without (2.2°). Similarly relative transverse plane range of motion was significantly lower with orthotics (1.1°) compared to without (1.8°). Plantar fascia strain did not differ significantly between orthotic (7.1) and no-orthotic (7.1) conditions. This study shows that although orthotics did not serve to reduce plantar fascia strain, they are able to mediate reductions in coronal and transverse plane rotations of the midfoot.
Click to expand...

Craig Payne · Oct 9, 2014

I face plamed this study here:
http://www.runresearchjunkie.com/foot-orthotics-for-reducing-load-in-the-plantar-fascia/

Basically:
1. The foot orthotics did not even have the design features that you would expect to reduce the strain
2. We know nothing about the foot types of the subjects
3. I not totally convinced that they were even measuring plantar fascia strain.

Joe Vasquez C.Ped. · Oct 9, 2014

Agree...also what kind of shoes?
What foot type as well as what types of compensation for any given foot type?

NewsBot · Apr 5, 2022

Different Design Feature Combinations of Flatfoot Orthosis on Plantar Fascia Strain and Plantar Pressure: A Muscle-Driven Finite Element Analysis With Taguchi Method
Ying Peng et al
Front Bioeng Biotechnol. 2022 Mar 10

Customized foot orthosis is commonly used to modify foot posture and relieve foot pain for adult acquired flexible flatfoot. However, systematic investigation of the influence of foot orthotic design parameter combination on the internal foot mechanics remains scarce. This study aimed to investigate the biomechanical effects of different combinations of foot orthoses design features through a muscle-driven flatfoot finite element model. A flatfoot-orthosis finite element model was constructed by considering the three-dimensional geometry of plantar fascia. The plantar fascia model accounted for the interaction with the bulk soft tissue. The Taguchi approach was adopted to analyze the significance of four design factors combination (arch support height, medial posting inclination, heel cup height, and material stiffness). Predicted plantar pressure and plantar fascia strains in different design combinations at the midstance instant were reported. The results indicated that the foot orthosis with higher arch support (45.7%) and medial inclination angle (25.5%) effectively reduced peak plantar pressure. For the proximal plantar fascia strain, arch support (41.8%) and material stiffness (37%) were strong influencing factors. Specifically, higher arch support and softer material decreased the peak plantar fascia strain. The plantar pressure and plantar fascia loading were sensitive to the arch support feature. The proposed statistics-based finite element flatfoot model could assist the insole optimization and evaluation for individuals with flatfoot.
Click to expand...

NewsBot The Admin that posts the news.

Craig Payne Moderator

Joe Vasquez C.Ped. Member

NewsBot The Admin that posts the news.

The effect of foot orthotics on gluteal function

Treating pain in adult flat foot -exercises more effective than orthotics

Effect of Footwear and Foot Orthotics on Venous Status

Effect of Foot Orthotics on EMG

Effect of foot orthotics on running performance

Effects of reinforcing the lateral longitudinal arch on foot orthotics

Effect of Foot Orthotics on Venous Function

Share This Page