10 Medical and surgical apparatus and instruments, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical and post-surgical monitoring and sensory apparatus and instruments, namely, biofeedback sensors, that communicate their position and changes in their position without wired connection; physiotherapy apparatus and instruments, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; physiotherapy monitoring and sensory apparatus and instruments, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the lower limbs, hips, knees, legs, upper legs, lower legs, ankles, feet and toes to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the hips to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the knees to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the legs to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the lower legs to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the ankles to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical, and physiotherapy apparatus and instruments for use on the feet and toes to help improve movement and mobility, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical and physiotherapy apparatus and instruments to help improve movement and mobility of all or part of the lower limbs, hips, knees, legs, upper legs, lower legs, ankles, feet and toes for individuals suffering from congenital limb deficiencies, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical, surgical, post-surgical and physiotherapy apparatus and instruments to help improve movement and mobility of all or part of the lower limbs, hips, knees, legs, upper legs, lower legs, ankles, feet and toes for individuals following limb loss or full or partial amputations of the lower limbs, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; medical apparatus and instruments to sense and monitor movement and mobility in the lower limbs, hips, knees, legs, upper legs, lower legs, ankles, feet and toes for individuals suffering from congenital limb deficiencies and for individuals following limb loss or full or partial amputations of the lower limbs, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; exercise apparatus for medical and post-surgical rehabilitative purposes, namely, biofeedback sensors that communicate their position and changes in their position without wired connection; exercise boots for medical and post-surgical rehabilitative purposes containing biofeedback sensors that communicate their position and changes in their position without wired connection; exercise equipment for medical and post-surgical rehabilitative purposes containing biofeedback sensors that communicate their position and changes in their position without wired connection; exercise machines for medical and post-surgical rehabilitative purposes containing biofeedback sensors that communicate their position and changes in their position without wired connection; exercise machines for therapeutic purposes containing biofeedback sensors that communicate their position and changes in their position without wired connection; computer controlled exercise apparatus for therapeutic use containing biofeedback sensors that communicate their position and changes in their position without wired connection; physical exercise machines containing biofeedback sensors for medical and post-surgical purposes that communicate their position and changes in their position without wired connection; parts and fittings especially adapted for the aforesaid medical goods