Silicon-Gel Liner

Copolymer is soft, cushiony and highly elastic, offering good protection for low activity for many types of residual limbs. Usually a thermoplastic elastomer, which contains skin-friendly white oil, it is especially good for residual limbs with dry skin. Copolymer performs best with pin or suction suspension. Both require a Total-Surface Weight-Bearing (TSWB) socket. Ottobock recommends copolymer liners for individuals with a low activity level.

Liners are available with a few special features. There are antibacterial additives, textile outer layers for easier application, anatomical shaping, non-stick treatments, variable thicknesses to accommodate sensitive skin, pre-flexed knees, as well as tough tear- and puncture-resistant formulas.

Gel Liner

Polyurethane has a unique ability to flow away from high pressure. That means the pressure in your socket is well distributed. A polyurethane (sometimes abbreviated as PUR) liner offers a precise, intimate and comfortable fit for all types of residual limbs. These “flow characteristics” and damping of pressure on your limb make it a good choice for sensitive, bony or scarred residual limbs. Polyurethane performs best with vacuum suspension or suction suspension. Both require a Total-Surface Weight-Bearing socket (TSWB).

Silicon Liner

A Silicone liner provides high stability and good adhesion if your limb has a lot of soft-tissue. It performs best with shuttle-lock suspension. (“Shuttle lock suspension” means there is a pin attached to the end of the liner which inserts into a locking mechanism in the bottom of the socket. The lock connects your socket to your prosthesis.) Soft but resistant to pressure, silicone is durable and easy to clean.