Abstract

Successful vascular anastomosis is essential for the survival of free tissue transfer. The aim of the study is to review the current literature and perform a meta-analysis to assess the potential advantages of a mechanical anastomosis coupler device (MACD) over the hand-sewn (HS) technique for venous anastomoses. A systematic Medline search was performed to gather all reports of articles related to MACD from 1984 until now. The following data were extracted: first author and publication date, study design, number of patients and anastomosis, coupler size, site and type of reconstruction, venous anastomotic time, flap failure. A meta-analysis was performed on articles that met the following inclusion criteria: studies comparing MACD and HS technique in venous anastomosis, reporting anastomotic time, and postoperative complications. Thirty-three studies were included for the analysis. Twenty-four were retrospective case series and nine were retrospective comparative studies. A total of 12,304 patients were enrolled with a mean age of 49.23 years (range 31-72). A total of 13,669 flaps were accomplished. The thrombosis rate recorded with MACD was 1.47%. The meta-analysis revealed that MACD significantly decreased anastomotic time (standard difference in means = -0.395 ± 0.105; Z = -3.776; p < .001) and postoperative flap failure risk (odds ratio [OR] = 0.362, 95% confidence interval [CI] = 0.218-0.603, Z = -3.908, p < .001), but it did not decrease postoperative venous thrombosis risk (OR = 0.504, 95% CI = 0.255-1.129, Z = -1.666, p = .096). MACDs are a safe and effective alternative to traditional anastomosis. The anastomotic coupler is easier, much faster, and requires less technical skills than a HS microvascular anastomosis.

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