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Published on: May 27, 2020
Amputee socks: thickness of multiple socks
John C Cagle1, Alan J Yu1, Marcia A Ciol2
1Department of Bioengineering, University of Washington, Seattle, Washington USA.
Background And Aim:
It is unclear how total sock ply and thickness are related when more than one sock is worn. The objectives were to determine whether the thickness of one multi-ply amputee sock of ply P was the same as the thickness of a stack of reduced-ply socks of total ply P, and whether the thickness of N single socks stacked one on top of the other was equal to the sum (1 to N) of the single sock thicknesses.
Technique:
Using a custom instrument, compressive stresses were applied while sock thickness was measured.
Discussion:
The thickness of one multi-ply sock of ply P was typically less than the thickness of a stack of reduced-ply socks of total ply P. The thickness of N single socks stacked one on top of the other was approximately equal to the sum (1 to N) of the single sock thicknesses.
Clinical Relevance:
Our findings suggest three 1-ply socks to be 20% greater in thickness than one 3-ply sock, and one 3-ply + two 1-ply socks to be 30% greater in thickness than one 5-ply sock.
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