Comparing clinical and aesthetic outcomes of cross-finger and homodigital reverse digital artery island flap for fingertip injuries: A single-center retrospective cohort study

Abstract

BackgroundReverse homodigital artery island flap (RHDI) has reported some postoperative complications. Cross-finger reverse digital artery island flap (CRDI), which is harvested from an adjacent intact finger, has been performed to decrease these complications. This study aimed to provide a review of the CRDI procedure and to compare the clinical outcomes of CRDI with RHDI. MethodsRHDI has been performed for fingertip amputations with the deficit of 1.5–2.5cm before 2018, and CRDI has been performed since 2018. We assessed functional and aesthetic outcomes, including finger length, nail deformity, finger motion, and Hand20 scores at the final follow-up. ResultsWe identified 22 patients who underwent RHDI and ten patients who underwent CRDI. The mean follow-up period was 10.3 ± 5.3 months. The median time required for wound healing in RHDI was 47.0 days (IQR: 34.3–55.8), and that in CRDI was 34.5 days (IQR: 29.3–44.3). The hook nail deformity occurred significantly more frequently in RHDI compared to in CRDI (40.9% vs. 0.0%, p = 0.03). Flexion contracture of the proximal interphalangeal joint greater than 15º was found significantly more in RHDI than in CRDI (36.4% vs. 0,0%, p = 0.04). The median postoperative total active motion of the donor site in CRDI was 278º (IQR: 260º–280º). The median postoperative Hand20 scores were similar between the two groups. ConclusionCRDI was associated with superior clinical outcomes in terms of lower rate of postoperative flexion contracture and hook nail deformity, potentially making it a better option compared to RHDI.