The primary aim of this study is to determine if the SSI rate following revision total hip and knee arthroplasty is reduced in patients treated with the PICO device compared to patients with traditional postoperative dressings. Our secondary goals include; comparing the amount of wound drainage, rate of resolution of wound drainage, length of hospital stay, functional outcomes, and economic implications of wound drainage and SSI after revision arthroplasty comparing PICO and traditional dressings.