An insert interface adapted to fit within a prosthesis between a convex-shaped distal end of a prosthetic liner and an interior distal end of a prosthetic socket for collecting data measurement of the fit of a residual limb of an amputee within the prosthesis comprising an insert comprising a resilient pad of elastomeric material having an upper surface and a lower surface with a concave shaped upper surface adapted to provide a contiguous surface with an interior surface of a prosthetic socket when inserted therein and provide a cushion for a distal end of a residual limb when worn by an amputee, and a lower surface having a shape complementally configured to a distal interior surface of a prosthetic socket when inserted therein, and at least one force sensor mounted centrally within said pad in proximity to the upper surface of the pad for sensing forces against the pad created by a downward movement of a residual limb of an amputee when wearing the socket and for electronically wirelessly transmitting data indicative of said sensed forces via a receiver/transmitter to a remote data processing computer collected by a user, rehabilitation doctor, and/or a CPO (Certified Prosthetist/Orthotist) for determining adjustments to the prosthesis.
