Functional outcome of multiple toe transfer procedure for open multiple transmetacarpal amputation secondary to a crushing injury: A case report.

Introduction: Reconstruction for open multiple transmetacarpal amputation secondary to a crushing injury is really challenging. Some treatment approaches could be proposed. To avoid the drawbacks of a prosthesis and hand transplantation such as the high cost, and long-term side effects of anti-rejection drugs, toe transfers were chosen.

Optical diffraction properties of three superimposed self-organized nanostructures induced by a laser process.

Controlling the diffraction properties of materials over a large area holds great promise for a wide range of optical applications. Laser-based techniques have emerged as a viable solution to address this need. Here, we present the diffraction properties of laser-induced self-organized structures, which consist of three interlaced grating-like structures: self-organized nanoparticles, self-organized cracks, and laser marking lines.

Hybridization between plasmonic and photonic modes in laser-induced self-organized quasi-random plasmonic metasurfaces.

Plasmonic metasurfaces made of perfectly regular 2D lattices of metallic nanoparticles deposited on surfaces or close to waveguides can exhibit hybridized plasmonic and photonic modes. The latter arise from the excitation of surface or guided modes through the in-plane coherent scattering of periodic arrays. Recently, laser-induced self-organization of random plasmonic metasurfaces has been used to create nanoparticle gratings embedded in protective layers.

Anti-Counterfeiting White Light Printed Image Multiplexing by Fast Nanosecond Laser Processing.

Passive plasmonic metasurfaces enable image multiplexing by displaying different images when altering the conditions of observation. Under white light, three-image multiplexing with polarization-selective switching has been recently demonstrated using femtosecond-laser-processed random plasmonic metasurfaces. Here, the implementation of image multiplexing is extended, thanks to a color-search algorithm, to various observation modes compatible with naked-eye observation under incoherent white light and to four-image multiplexing under polarized light.

Using 320-detector row computed tomography angiography to investigate the arterial anatomy of the toe flaps on living humans.

Purpose: Using 320-detector row computed tomography angiography (320-CTA) to investigate the arterial supply for the toe flaps, namely the anatomical characteristics of the dorsalis pedis artery (DPA), the first dorsal metatarsal artery (FDMA), and the arteries of the first toe web space (AsFTWS).

Methods: This was a prospective study on CTA of 72 intact feet of 36 Vietnamese adults who had sequelae of thumb or metacarpal hand amputation, from June 2017 to December 2019, then preoperative CTA images were compared with surgical findings on 31 feet of 29 patients.

Results: 320-CTA was able to investigate the DPA, FDMA, and AsFTWS in 100% of cases.

Use of single-staged transmetatarsal trimmed great toe transfer for reconstruction of a thumb amputation at the carpometacarpal joint.

Background: Reconstruction for proximal thumb amputation at the carpometacarpal (CMC) joint level is extremely challenging. All thenar muscles are lost and other fingers might be lost or injured. Transmetatarsal trimmed great toe (TGT) transfer may be an option in such cases.

A simple approach to thumb amputation reconstruction at metacarpal base with toe transfer, two case reports.

Introduction: Reconstruction for thumb amputation at the metacarpal base by toe transfer is challenging. To restore a thumb with normal or near-normal length, the reconstruction plan usually involves a complicated and challenging process either in two stages (stage 1: resolving soft tissue and bone defect; stage 2: toe transfer) or a single stage by using two free flaps (one free soft tissue flap and one toe flap). However, is it necessary to restore the full length of the thumb for functional and aesthetic achievement?

Presentation Of Cases: Two male patients (21 and 22 years old) had a thumb amputation at the metacarpal base.