Gel Interface
A soft, gel-based layer—typically silicone or urethane—placed between the residual limb and the prosthetic socket to cushion and protect the skin.
Full Definition
A gel interface (also called a gel liner or cushion liner when it rolls onto the limb) is a compliant material system that distributes pressure, reduces shear forces, and protects the skin of the residual limb from abrasion and breakdown within the rigid prosthetic socket. Gel interfaces are distinct from suspension liners (which also serve to suspend the prosthesis) and from sock plies (which are textile rather than gel). Editors should note that 'gel liner' and 'gel interface' are used interchangeably in some clinical contexts but may be differentiated in product documentation; follow the source document's usage.
Usage
Usage note: Distinguish from 'suspension liner,' which additionally locks into or grips the socket for suspension. 'Gel interface' is the preferred neutral term when suspension function is not specified.
In Context
- "The dermatologist recommended switching to a urethane gel interface to reduce the contact dermatitis caused by the silicone liner." — Interdisciplinary clinical note
- "Editors should not use 'liner' and 'gel interface' interchangeably without confirming whether suspension function is implied." — Editorial annotation