Background: Inguinal lymph node dissection (ILND) for melanoma has been associated with high rates of wound complication (WC). Sartorius transposition (ST) is a technique that has been proposed to minimize morbidity. We report the frequency of utilization of ST and associated clinical outcomes in a national sample.
Materials and methods: Patients undergoing ILND for melanoma were identified in the American College of Surgeons National Surgical Quality Improvement Program Participant Use File (2005-2011). ST status was determined. Univariate logistic regression analyses were performed. Propensity score matching was used to control for operative time. Conditional logistic regression was used to determine the likelihood of a WC following ST in the matched cohort.
Results: Of the 381 patients identified, 13% had a WC. By univariate analysis, increasing body mass index (P = 0.006), diabetes (P = 0.02), and longer operative time (P = 0.005) were associated with WC. Sixty-three patients received a prophylactic ST (16.5%). ST use was significantly associated with deep nodal dissection (P = 0.03) and increased operative time (P < 0.0001) but not with any preoperative risk factors. WC rates were similar between ST and non-ST patients (10% versus 14%, P = 0.39). In the multivariate analysis of patients matched for operative time, ST was the only factor significantly associated with lower WC rate. The WC rate was 23% in non-ST compared with 8% in ST patients (P = 0.05).
Conclusions: Nationally, ST is used infrequently at the time of ILND. Moreover, patients undergoing ST do not appear to be selected based on the patient factors associated with increased risk of WC. Risk factors for wound complication should be considered in the selective use of ST.
Keywords: Inguinal lymph node dissection; Melanoma; Sartorius transposition flap; Wound complication.
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