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Τετάρτη 3 Μαρτίου 2021

Application of computed tomography angiography-assisted classification of arterial branches in the first web space of the foot for thumb reconstruction

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J Plast Reconstr Aesthet Surg. 2021 Jan 10:S1748-6815(21)00034-6. doi: 10.1016/j.bjps.2020.12.100. Online ahead of print.

ABSTRACT

BACKGROUND: Computed tomography angiography (CTA) has become a widely used imaging modality in vascular surgery. The first web arterial branches of the foot are significant for surgical planning of the donor site for thumb reconstruction.

METHODS: We retrospectively analysed 30 thumb reconstructions with free second toe/great toe wrap-around flap transfer, performed between January 2016 and January 2019. The mean patient age was 30 (2-45) years. The causes of hand injury were: 20 machine strangulation injuries, 6 heavy weight smash injuries, and 4 crush injuries. Patients with iodine allergy were excluded preoperatively. We evaluated the effectiveness of CTA in visualizing first web arterial branches and compared it with intraoperative findings. Surgical plan for donor sites was prepared based on the classification of the first web arterial branches.

RESULTS: The arterial branches of the patients were classified based on CTA findings as follows: (1) fork type: 24 patients (48 feet, 80%); (2) main trunk type: four patients (8 feet, 13.33%); and (3) side branch type: one patient (2 feet, 3.33%). One case of poor vascular continuity and artifacts in CTA underwent thumb reconstruction with free great toe wrap-around flap transfer. Tissue survival was achieved in all reconstructed thumbs. During the follow-up period (average, 12 months), all reconstructed thumbs exhibited good outcomes. The donor sites on the feet of all patients recovered well.

CONCLUSION: CTA allows preoperative assessment of blood supply and planning of donor site. Our results can serve as a reference for surgical planning of the donor site while reducing the occurrence of adverse events.

PMID:33648867 | DOI:10.1016/j.bjps.2020.12.100

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