TEC makes a urethane-based liner for AK and BK prostheses. And ALPS is also fabricating custom styles in addition to its standard line. Custom liners can vary thickness in critical areas and utilize built-in end pads. And Sheaths Silipos originated the Gel Sheath with the help of Triathlete Jim MacLaren. The gel cushion, equivalent to a two-ply sock, provides a layer of protection for active and diabetic patients who may be prone to skin breakdown.
Durability is much improved from initial efforts.
IPOS also has a line of similar products. Hygiene is imperative. Sheaths should be changed daily and the residual limb washed after each use. USMC manufactures a thinner gel sheath which is effective when the Silipos unit is too thick. Silipos makes a gel liner sock for patients who can t tolerate silicone against their skin.