Piezo DX Quartz Crystal Electro Point Stimulator 115472 the weakened OA leg can the weakened OA leg can be significantly strengthened and gait can be normalized prior to the surgery to accelerate recovery and improve overall patient outcomes The manual pump allows you to quickly and easily increase compression to a level that's comfortable for you The electricity produced by the Piezo electric stimulator actually helps and assists both the nervous and vascular systems to reinstate normal blood vessel diameter The pulse is generated when pressure is applied and released to the tuned solid state ceramic quartz crystal in the unit