Increased forefoot loading is associated with an increased plantar flexion moment
Tom Melai1, Nicolaas C Schaper, T Herman Ijzerman
1Department of Health Innovation & Technology, Institute of Allied Health Professions, Fontys University of Applied Sciences, Eindhoven, The Netherlands; Department of Human Movement Sciences, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands.
Human Movement Science
|August 21, 2013
Summary
Diabetic neuropathy affects ankle joint mechanics, leading to increased forefoot pressure. Improving foot roll-off control may help redistribute plantar pressure, benefiting diabetic patients.
Area of Science:
- Biomechanics
- Diabetic foot complications
- Gait analysis
Background:
- Diabetic polyneuropathy can alter foot biomechanics.
- Increased plantar pressure under the forefoot is a common issue in diabetic individuals.
- Understanding the relationship between ankle joint forces and plantar pressure is crucial for prevention.
Purpose of the Study:
- To investigate the link between ankle joint force generation and elevated forefoot plantar pressures.
- To identify the cascade of effects from altered ankle mechanics to plantar pressure distribution.
Main Methods:
- Gait analysis and plantar pressure measurement were conducted.
- Data were collected at preferred and imposed gait velocities.
- Participants included diabetic subjects with and without polyneuropathy, and healthy elderly individuals.
Main Results:
- A higher plantar flexion moment at 40% of stance correlated with a faster center of pressure displacement rate.
- Faster center of pressure displacement was strongly associated with increased forefoot loading.
- These correlations were significant at both preferred and imposed gait velocities.
Conclusions:
- Altered ankle plantar flexion moments influence the rate of center of pressure transfer.
- This cascade effect leads to higher plantar pressures in the forefoot, particularly in individuals with diabetic polyneuropathy.
- Interventions focusing on controlling foot roll-off may improve plantar pressure distribution and reduce risks.
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