Application of Negative Pressure Closed Drainage Combined with Mesh Skin Grafting Technology in Patients with Large Area Skin Tearing Injury

WANG Jun; ZHANG Chengshu; LI Heng

doi:10.3969/j.issn.1004-437X.2026.12.024

Abstract：Objective To explore the application effect of negative pressure closed drainage combined with mesh skin grafting technology in patients with large area skin tearing injuries.Methods A retrospective analysis was conducted on the data of 87 patients with large area skin tearing injuries who completed treatment in General Hospital of Pingmei Shenma Group from July 2019 to July 2023.According to compression methods,they were divided into a control group(43 cases,treated with mesh skin grafting technique and traditional compression technique)and an observation group(44 cases,treated with mesh skin grafting technique and negative pressure closed drainage).The clinical indexes,skin graft survival rate,wound healing,scar hyperplasia and postoperative complications were compared in both groups.Results The control group had more dressing changes than the observation group,longer hospital stay and wound healing time,lower skin graft survival rate,and higher incidence of postoperative wound infection compared to the observation group(P＜0.05).At 1 week and 4 weeks after surgery,the wound healing area in the control group were lower than those in the observation group(P＜0.05).At 1 month and 6 months after surgery,patient scar assessment scale(PSAS)and observer scar assessment scale(OSAS)scores of the control group were higher than those of the observation group(P＜0.05).Conclusion Patients with large area skin tearing injuries treated with negative pressure closed drainage combined with mesh skin grafting technology have a high survival rate of skin grafts,can achieve early healing,reduce dressing changes,and lower the risk of wound infection,without causing severe scar hyperplasia.