Negative pressure wound therapy combined with reversed latissimus dorsi muscle flap for postoperative deep infection after spinal instrumentation

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Objective To explore a potentially effective treatment of postoperative deep infection after spinal instrumentation without removal of implants. Methods A total of 4 patients with postoperative deep infection after spinal instrumentation were treated at our hospital between January 2015 and May 2016. They were 2 men and 2 women, aged from 62 to 75 years (mean, 69.2 years) . They were treated with aggressive surgical debridement under the guidance of methylene blue and negative pressure wound therapy. Reversed latissimus dorsi muscle flap was used to obturate the wound when the bacterial culture of the wound was negative and the relevant inflammatory indicators returned to normal. Negative pressure treatment continued over the closed incision. Results The devices for negative pressure wound therapy were removed in the 4 patients one week after surgery. All the wounds were healed well by first intention 2 weeks after surgery without removal of their implants. The patients were discharged after their examinations for blood routine, CRP, ESR and PCT turned to be normal. Follow-ups for more than one year revealed no re-infection, implants loosening or other adverse effects. Conclusions Negative pressure wound therapy combined with reversed latissimus dorsi muscle flap is a new attempt to treat postoperative deep infection after spinal instrumentation without implant removal. It may increase the rate of implants reserved, accelerate wound healing and raise the curative rate of deep infection. Key words: Spine; Internal fixators; Negative-pressure wound therapy; Latissimus dorsi muscle flap; Implant infection

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