Effects of Kneehab 12-week Peri-operative Total Knee Arthroplasty

The Control group will complete the standard physiotherapy care pre and post-TKA surgery without NMES.

"NMES 2 x 20 minute sessions/day, 5 days/week, 6 weeks pre and 6 weeks post TKA.~Kneehab™ (Bio-Medical Research, Ltd., Galway, Ireland) is a NMES device with Multipath™ technology, designed to activate the quadriceps muscle. Kneehab™ is a battery operated, portable, 2-channel cutaneous electrical muscle stimulator, which operates using constant current pulses to stimulate the nerves innervating the quadriceps muscle. Kneehab™, consists of a thigh wrap with anatomically shaped electrodes and a control unit. Electrodes are placed over the quadriceps muscles and the garment is wrapped around the leg above the knee. Brief electrical impulses are delivered through the skin surface adhesive electrodes."