Quantifying load in the plantar fascia

NewsBot · Aug 12, 2015

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How much load is applied in identified locations of the plantar fascia in static and locomotion
Sedegheh Malek Mohammadi
Prosthet Orthot Int June 2015 vol. 39 no. 1 suppl 2-608 Abstract 83

Background
It has been accepted that plantar fascia thickness is a biomechanical variable to understand the concentration of the amount of the applied load in identified locations of the plantar fascia.
Aim:
The aim of this research is quantifying the amount of the load / body weight applied in identified /equivalent locations of the plantar fascia in both feet.
Method:
This research was done through a four- step method. Step 1, literatures were reviewed to search the results, gaps and problems within previous studies about plantar fascia evaluation with ultrasound. Step 2, plan of investigation was designed to recognize each location of the plantar fascia along its length and to identify equivalent locations of the plantar fascia in both feet with ultrasound 2D measuring. Step 3, pressure markers were put on identified locations of the plantar fascia. The amount of the applied pressure was assessed with E-med, through the ground reaction force, in static and locomotion. Step 4, the percentage of the body weight was calculated in identified locations.
Results:
It was found that quantifying the amount of the applied load in identified location of the plantar fascia is achievable, individually. The outcome of quantitative information of an individual with 70 Kg weight was; plantar fascia thickness [(1.2 ? 0.7mm) < longitudinally > (1.3 ? 0.3mm) and (1.1 ? 0.6mm) < transversely > (1.4 ? 0.2mm)], [(74 ? 1.6 mm) < the length > (166.4 ? 4.7mm) and (22.2 ? 4.7mm) < the width > (48.3 ? 3.6mm) of the plantar fascia location under pressure], [ (43.3 ? 4.7) < applied pressure on the plantar fascia > (78.3 ? 19.5)], [(0.6% ? 0.18%) <the percentage of the body weight in identified location of the plantar fascia (1.1% ? 0.27%)]
Discussion & Conclusion
Relying on quantitative information of this research; insole, shoes and foot orthosis can be designed more accurate to relief pain, to prevent / to stop the progression of foot and ankle deformity and to prevent plantar fascia injuries.
References
[3] Wearing, S.C. 2006. Sports Medicine
[6] Caravaggi, P., 2010. Journal of Anatomy
[15] Rao, S., 2011. Gait & posture
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