The Role of Negative Pressure Wound Therapy in Temporizing Traumatic Wounds before Lower Limb Soft Tissue Reconstruction: A Systematic Review.

Background: In practice, there is often a delay from initial debridement and temporary fixation to definitive soft tissue coverage of traumatic leg wounds. Without clear evidence, conservative negative pressure wound therapy (NPWT) is increasingly used to temporize these wounds. This systematic review summarizes and synthesizes the literature on using NPWT to temporize traumatic leg wounds before surgery in adult surgical patients. Methods: A comprehensive search of Medline, Embase, and Cochrane Library was performed from inception until July 2022, inclusively. Two independent reviewers performed screening, data extraction, and risk of bias assessment. Primary English studies, including adult patients (≥16 years old) with a fracture below the knee up to and including the ankle that received NPWT to temporize wounds before definitive soft tissue reconstruction with a flap and/or graft, were included. Results: Thirty-four studies, including 804 patients who received NPWT, were included. The partial/total flap loss rate was 6.95% (n = 9 studies), the infection rate was 19.5% (n = 25 studies), the nonunion rate was 18% (n = 15 studies), the delayed union rate was 9.31% (n = 3 studies), and the amputation rate was 15.4% (n = 6 studies). The mean late stay was 43.1 days (n = 9 studies), and the follow-up length was 23.7 months (n = 9 studies). The mean time to wound healing was 5.63 months (n = 2 studies), and the time to soft tissue coverage was 40.8 days (n = 12 studies). The mean time to achieve bone union was 7.26 months (n = 6 studies). Conclusion: NPWT can be used to temporize traumatic wounds while awaiting soft tissue reconstruction.