Background And Objective: Tunneled island flaps that transfer skin from a site adjacent to the wound are an effective way to reconstruct defects. These flaps provide good aesthetic and functional results and can be completed during a single surgical session, thus reducing complications. The procedure consists of taking an island of skin about the size of the surgical defect and moving it through a subcutaneous tunnel to cover the wound. We aimed to exemplify the use of these flaps in different regions of the face.
Material And Methods: Retrospective descriptive study of 12 cases in which tunneled island flaps were used after removal of malignant tumors in different facial regions.
Results: The tumors, all of which were basal cell carcinomas, were removed by means of conventional surgery from 9 patients and Mohs micrographic surgery from 3 patients. Histology demonstrated tumor-free margins after excision in all cases. None of the tumors recurred during a mean follow-up period of 25 months. All complications were minor and transient. There were 3 cases of trapdoor effect and 2 each of postsurgical bleeding, transient superficial flap necrosis, and slight protrusion of the pedicle. The final cosmetic and functional outcome was satisfactory in all cases.
Conclusions: Tunneled island flaps are particularly useful for repairing defects in the center of the face, where several anatomical structures converge. These flaps, which use donor skin that is similar to skin in the receptor site, can be used to close large defects in one-step procedures with only slight alteration of the facial architecture.
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http://dx.doi.org/10.1016/j.ad.2021.06.001 | DOI Listing |
ACS Nano
January 2025
Institute of Physical Engineering, Brno University of Technology, Technická 2, 616 69 Brno, Czech Republic.
Blue phosphorene, a two-dimensional, hexagonal-structured, semiconducting phosphorus, has gained attention as it is considered easier to synthesize on metal surfaces than its allotrope, black phosphorene. Recent studies report different structures of phosphorene, for example, on Cu(111), but the underlying mechanisms of their formation are not known. Here, using a combination of in situ ultrahigh vacuum low-energy electron microscopy and in vacuo scanning tunneling microscopy, we determine the time evolution of the surface structure and morphology during the deposition of phosphorus on single-crystalline Cu(111).
View Article and Find Full Text PDFJ Phys Chem B
January 2025
Institute of Thermal Separation Processes, Hamburg University of Technology, Eißendorfer Straße 38, Hamburg 21073, Germany.
Deep eutectic solvents (DESs) have emerged as promising solvents for biocatalysis. While their impact on enzyme solvation and stabilization has been studied for several enzyme classes, their role in substrate binding is yet to be investigated. Herein, molecular dynamics (MD) simulations of horse-liver alcohol dehydrogenase (HLADH) are performed in choline chloride-ethylene glycol (ChCl-EG) and choline chloride-glycerol (ChCl-Gly) at varying water concentrations.
View Article and Find Full Text PDFJ Clin Med
December 2024
Department of Maxillofacial Surgery, University of Siena, 53100 Siena, Italy.
: Currently, there is a lack of a comprehensive classification system for soft-palate defects that provides synthetic information to guide functional reconstructive treatment. Our awareness, shaped by extensive experience, of the superiority of myomucosal flaps to fasciocutaneous flaps in functional palate reconstruction has driven us to introduce a new defect-based classification system and propose a new algorithm for reconstructing soft-palate defects using buccinator myomucosal flaps. : Soft-palate defects were classified into five classes.
View Article and Find Full Text PDFNat Commun
December 2024
Institute of Physics, Chinese Academy of Sciences, Beijing, China.
Spin-polarized edge states in two-dimensional materials hold promise for spintronics and quantum computing applications. Constructing stable edge states by tailoring two-dimensional semiconductor materials with bulk-boundary correspondence is a feasible approach. Recently layered NiI is suggested as a two-dimensional type-II multiferroic semiconductor with intrinsic spiral spin ordering and chirality-induced electric polarization.
View Article and Find Full Text PDFACS Nano
January 2025
Center for Advanced Quantum Studies, School of Physics and Astronomy, Beijing Normal University, Beijing 100875, China.
Introducing quantum confinement has shown promise to enable control of charge carriers. Although recent advances make it possible to realize confinement from semiclassical regime to quantum regime, achieving control of electronic potentials in individual nanoscale quantum dots (QDs) has remained challenging. Here, we demonstrate the ability to tune quantum confined states in individual nanoscale graphene QDs, which are realized by inserting nanoscale monolayer WSe islands in graphene/WSe heterostructures via interfacial engineering.
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