Background: Combined revascularization and free flap reconstruction is one treatment method for chronic limb-threatening ischemia (CLTI) with complex wounds. The purpose of this systematic review and meta-analysis was to investigate the characteristics of this combined procedure and to assess postoperative outcomes.
Methods: A systematic search was performed across PubMed, Scopus, and the Web of Science for studies between January 2000 and February 2022. A random-effects meta-analysis for postoperative outcome was conducted.
Results: Fifteen articles encompassing 1,176 patients with 1,194 free flaps were ultimately included in the qualitative and quantitative assessment. Our meta-analysis showed the following complication rates for short-term postoperative outcomes: 37% (95% confidence interval [CI], 18-53%; = 74%) for reoperation, 13% (95% CI, 2-24%; = 0%) for vascular thrombosis, 9% (95% CI, 0-17%; = 0%) for total flap failure, 8% (95% CI, 0-17%; = 0%) for partial flap failure, 4% (95% CI, 0-10%; = 0%) for amputation, and 3% (95% CI, 0-9%; = 0%) for 30-day mortality. The 1-, 3-, and 5-year limb salvage rates were 86% (95% CI, 78-92%), 81% (95% CI, 68-88%), and 71% (95% CI, 53-83%), respectively. The 1-, 3-, and 5-year patient survival rates were 93% (95% CI, 90-96%), 92% (95% CI, 77-97%), and 75% (95% CI, 50-88%), respectively.
Conclusion: Combined revascularization and free flap reconstruction for CLTI with complex wounds was clearly effective for the long-term outcomes. However, this combined procedure should be considered on the assumption that the reoperation rate is high and that flap-related complications rate may be higher than lower extremity reconstruction of other etiologies.
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