Flat feet, happy feet? Comparison of the dynamic plantar pressure distribution and static medial foot geometry between Malawian and Dutch adults

In contrast to western countries, foot complaints are rare in Africa. This is remarkable, as many African adults walk many hours each day, often barefoot or with worn-out shoes. The reason why Africans can withstand such loading without developing foot complaints might be related to the way the foot...

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Bibliographic Details
Published in:PloS one 2013-02, Vol.8 (2), p.e57209-e57209
Main Authors: Stolwijk, Niki M, Duysens, Jacques, Louwerens, Jan Willem K, van de Ven, Yvonne Hm, Keijsers, Noël Lw
Format: Article
Language:English
Subjects:
Adult
Adults
Arches
Biology
Biomechanics
Center of pressure
Diabetes
Feet
Female
Foot - anatomy & histology
Foot - physiology
Foot diseases
Humans
Malawi
Male
Medicine
Middle Aged
Netherlands
Physics
Pictures
Plantar pressure
Posture
Pressure
Pressure distribution
Pressure patterns
Shoes & boots
Social and Behavioral Sciences
Stress concentration
Studies
Walking
Young Adult
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Summary:In contrast to western countries, foot complaints are rare in Africa. This is remarkable, as many African adults walk many hours each day, often barefoot or with worn-out shoes. The reason why Africans can withstand such loading without developing foot complaints might be related to the way the foot is loaded. Therefore, static foot geometry and dynamic plantar pressure distribution of 77 adults from Malawi were compared to 77 adults from the Netherlands. None of the subjects had a history of foot complaints. The plantar pressure pattern as well as the Arch Index (AI) and the trajectory of the center of pressure during the stance phase were calculated and compared between both groups. Standardized pictures were taken from the feet to assess the height of the Medial Longitudinal Arch (MLA). We found that Malawian adults: (1) loaded the midfoot for a longer and the forefoot for a shorter period during roll off, (2) had significantly lower plantar pressures under the heel and a part of the forefoot, and (3) had a larger AI and a lower MLA compared to the Dutch. These findings demonstrate that differences in static foot geometry, foot loading, and roll off technique exist between the two groups. The advantage of the foot loading pattern as shown by the Malawian group is that the plantar pressure is distributed more equally over the foot. This might prevent foot complaints.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0057209