Replies: Prosthetic Sock #2
Jarrod Eccles
Description
Collection
Title:
Replies: Prosthetic Sock #2
Creator:
Jarrod Eccles
Date:
6/13/2014
Text:
Dear List:
Here is the latest round of responses.
- Authors
Sanders JE, et al. Show all < <URL Redacted>>
Journal
Prosthet Orthot Int. 2012 Mar;36(1):77-86. doi: 10.1177/0309364611431290.
Epub 2012 Jan 6.
Affiliation
If you are an Academy Member this article was reviewed in a literature
update.
- Contact Aaron Jacobson (Hanger Clinic - Omaha, NE)...he has done
some very impressive research regarding volume change.
Good luck!
- Ply is based on a VA quality standard for wool socks. The wool had
to be of a certain quality and the yarn produced from that wool would be
consistent from one manufacture to another. 1 yarn = 1ply 2 yarn's =2 ply
and so on. The modern fibers do not follow that rule so we work on a ply
equivalent. 3 ply =.112-.120 inches 5ply = .130-.140 inches. And 6 ply
=.145-.155 inches. It's not exact due to many factors in production even
down to the humidity. You can do the math from here. Good luck ,
- Greetings
I will answer this from an amputee viewpoint. I have been an amputee for
over 40 years and have worn wool, cotton, Orlon acrylic, nylon and cool max
socks ( amongst others).
There is no good way to establish ply thickness on a chart. As a sock is
worn, the fibers compress in the weight bearing areas and can thin out. A
new 3-ply sock is thicker than a worn 3 ply sock. Regular washing helps
reduce this problem, but it still happens.
A chart on comparative thicknesses would only be accurate when the sock is
new.
My understanding has always been the ply number is how many strands were
used to make the yarn that is knitted. Depending On the base material, one
3 ply sock made from manufacturer A could be vastly different that one 3 ply
sock from manufacturer B
- A ply equals 1/8 or 3mm roughly in circumference. This of course
varies to stretched or worn socks. Can't give a reference of than those who
taught me. Measure a leg, pull a one ply on, measure again and you have your
answer.
Distal/calf area is always going experience greater loss due tissue to bone
mass ratio.
Again no reference other than experience ( personally and professionally) 3
to 6 ply is an average daily fluctuation for a 30 cm circumference leg (50mm
from distal) for 3 to 5 percent change.
Jarrod Eccles R.T.O. (c)
Director of Operations
Toll Free 877-395-0081
Skype: jarrodeccles
< <URL Redacted>> MOT INC
Here is the latest round of responses.
- Authors
Sanders JE, et al. Show all < <URL Redacted>>
Journal
Prosthet Orthot Int. 2012 Mar;36(1):77-86. doi: 10.1177/0309364611431290.
Epub 2012 Jan 6.
Affiliation
If you are an Academy Member this article was reviewed in a literature
update.
- Contact Aaron Jacobson (Hanger Clinic - Omaha, NE)...he has done
some very impressive research regarding volume change.
Good luck!
- Ply is based on a VA quality standard for wool socks. The wool had
to be of a certain quality and the yarn produced from that wool would be
consistent from one manufacture to another. 1 yarn = 1ply 2 yarn's =2 ply
and so on. The modern fibers do not follow that rule so we work on a ply
equivalent. 3 ply =.112-.120 inches 5ply = .130-.140 inches. And 6 ply
=.145-.155 inches. It's not exact due to many factors in production even
down to the humidity. You can do the math from here. Good luck ,
- Greetings
I will answer this from an amputee viewpoint. I have been an amputee for
over 40 years and have worn wool, cotton, Orlon acrylic, nylon and cool max
socks ( amongst others).
There is no good way to establish ply thickness on a chart. As a sock is
worn, the fibers compress in the weight bearing areas and can thin out. A
new 3-ply sock is thicker than a worn 3 ply sock. Regular washing helps
reduce this problem, but it still happens.
A chart on comparative thicknesses would only be accurate when the sock is
new.
My understanding has always been the ply number is how many strands were
used to make the yarn that is knitted. Depending On the base material, one
3 ply sock made from manufacturer A could be vastly different that one 3 ply
sock from manufacturer B
- A ply equals 1/8 or 3mm roughly in circumference. This of course
varies to stretched or worn socks. Can't give a reference of than those who
taught me. Measure a leg, pull a one ply on, measure again and you have your
answer.
Distal/calf area is always going experience greater loss due tissue to bone
mass ratio.
Again no reference other than experience ( personally and professionally) 3
to 6 ply is an average daily fluctuation for a 30 cm circumference leg (50mm
from distal) for 3 to 5 percent change.
Jarrod Eccles R.T.O. (c)
Director of Operations
Toll Free 877-395-0081
Skype: jarrodeccles
< <URL Redacted>> MOT INC
Citation
Jarrod Eccles, “Replies: Prosthetic Sock #2,” Digital Resource Foundation for Orthotics and Prosthetics, accessed November 25, 2024, https://library.drfop.org/items/show/236485.
