Sock Ply
The thickness denomination of a prosthetic sock, measured in plies, used to accommodate minor changes in residual limb volume and maintain socket fit.
Full Definition
Prosthetic socks are worn over the residual limb inside the socket to compensate for volume fluctuations. 'Ply' (plural: plies) denotes the thickness or layers of the sock fabric; common values are 1-ply, 3-ply, and 5-ply. Users may layer multiple socks (e.g., a 3-ply plus a 1-ply = 4-ply effective thickness). Editors should hyphenate ply counts when used as compound modifiers before a noun (e.g., '3-ply sock') and treat 'ply' as a count noun (not 'plies of sock'). The term appears in clinical notes, patient education materials, and fitting records.
Usage
Usage note: Hyphenate when used as a compound modifier: '3-ply sock.' Avoid the dated 'stump sock.' Do not confuse with the gel/silicone liner, which serves a different interface function.
In Context
- "The patient was advised to add a 1-ply sock if the 3-ply sock alone caused the socket to feel loose by afternoon." — Patient education handout
- "The clinical note recorded socket fit as acceptable with a total of 4-ply across two socks." — Prosthetic fitting record