Non-Systems NPTE Practice Exam

Redness over the kneecap often marks a pressure point from the limb pressing lower in the socket. When the residual limb shrinks after amputation, the limb can settle downward, increasing contact and pressure at the patellar area. The best way to address this is to increase the socket volume slightly so the limb sits a bit higher in the socket and the load is redistributed away from the patella. Adding a one-ply sock achieves this without altering alignment or introducing friction changes.

Other causes like high friction, excessive padding, or a loose socket would require different adjustments (reducing friction, removing padding, or tightening the fit), but they don’t fix the downward settling and targeted pressure at the patellar region.