A foot ulcer is the initiating factor in 85% of all diabetic amputations. Ulcer formation is believed to be contributed by
both pressure and shear forces. There are commercially available instruments that can measure plantar pressure.
However, instruments for plantar shear measurement are limited. In this paper, we investigate the application of antenna
sensors for shear and pressure measurement. The principle of operation of both antenna sensors will be discussed first,
followed by detailed descriptions on the antenna designs, sensor fabrication, experimental setup, procedure and results.
Because the antenna sensors are small in size, can be wirelessly interrogated, and are frequency multiplexable, we plan
to embed them in shoes for simultaneous mapping of plantar shear and pressure distributions in the future.