Comparison of outcomes between single- and multiple-perforator-based free perforator flaps: A systematic review and meta-analysis.

Background: Perforator-based free perforator flaps have become an important tool for the reconstruction of tissue defects. The effect of the number of perforators on the outcomes of perforator flaps has been widely debated. This study aimed to compare the outcomes of single- and multiple-perforator-based free perforator flaps in free-flap reconstruction.

Risk Factors for Free Flap Outcomes: A Retrospective Study of 318 Free Flaps for Head and Neck Defect Reconstruction.

Objectives: This study was conducted to identify the risk factors for free flap outcomes in head and neck reconstruction.

Methods: A retrospective review of 318 free flaps were used for head and neck reconstructions in 317 patients over seven years. The patient characteristics, surgical data, and flap outcomes were recorded.

Comparing donor site morbidity between radial and ulnar forearm free flaps: a meta-analysis.

The vascularised forearm free flap is a workhorse flap for the reconstruction of many types of soft tissue defects. However, the difference in donor-site morbidity between the radial forearm free flap (RFFF) and ulnar forearm free flap (UFFF) remains controversial. This study aimed to compare the donor-site outcomes of RFFF and UFFF.

Nonadiabatic Dynamics of Polaron Hopping and Coupling with Water on Reduced TiO.

By interplay between first-principles molecular dynamics and nonadiabatic molecular dynamics simulations based on the decoherence-induced surface-hopping approach, we investigate and quantify the mechanisms through which different electron polaron hopping regimes in the reduced anatase TiO(101) surface influence recombination of photogenerated charge carriers, also in the presence of adsorbed water (HO) molecules. The simulations reveal that fast hopping regimes promote ultrafast recombination of photogenerated charge-carriers. Conversely, charge recombination is delayed in the presence of slower polaron hopping and even more so if the polaron is pinned at one Ti-site, as typical following adsorption of HO on the anatase(101) surface.

Unprecedented neptunyl(V) cation-directed structural variations in NpO compounds.

Studies on transuranic oxides provide a particularly valuable insight into chemical bonding in actinide compounds, in which subtle differences between metal ions and oxygen atoms are of fundamental importance for the stability of these compounds as well as their existence. In the case of neptunium, it is still mainly limited to specific Np oxide compounds without periodicity in the formation of stable structures or different oxidation states. Here, we report a systematic global minimum search of NpO ( = 1-7) clusters and the computational study of their electronic structures and chemical bonding.

Atomic Structural Evolution of Single-Layer Pt Clusters as Efficient Electrocatalysts.

The rational synthesis of single-layer noble metal directly anchored on support materials is an elusive target to accomplish for a long time. This paper reports well-defined single-layer Pt (Pt-SL) clusters anchored on ultrathin TiO nanosheets-as a new frontier in electrocatalysis. The structural evolution of Pt-SL/TiO via self-assembly of single Pt atoms (Pt-SA) is systematically recorded.

Magnitude of radial forearm free flaps and factors associated with loss of volume in oral cancer reconstructive surgery: Prospective study.

Background: Adequate flap volume is key to maintaining oral function after oral cancer surgery. This study aimed to evaluate changes in radial forearm free flap (RFFF) volumes after 1 year of follow-up following ablative tumor surgery in the head and neck.

Methods: A prospective study that recorded the clinical data of 20 patients with head and neck cancer who underwent RFFF reconstruction.

The Effect of Medial Sural Artery Perforator Flap on Reconstruction of Soft Tissue Defects: A Meta-Analysis With Multiple Free Soft Flaps.

Background: With the gradual popularity of relatively novel medial sural artery perforator flap (MSAPF), robust studies are needed to compare the surgical outcomes of MSAPF versus multiple free soft flaps (MFSFs) to verify the advantages and disadvantages of MSAPF.

Methods: The authors searched PubMed, Web of Science, EMBASE, Cochrane Library, Chinese BioMedical Literature Database (CBM), and China National Knowledge Infrastructure (CNKI) until September, 2020, to identify studies that compared surgical outcomes of MSAPF and MFSFs. Two authors followed the PRISMA guidelines, individually extracted the data and performed the quality assessments.

Digital navigation and 3D model technology in mandibular reconstruction with fibular free flap: A comparative study.

Objective: The low accuracy limits the use of fibular free flap (FFF). We apply digital navigation and 3D printing model technology in mandibular reconstruction to improve FFF's accuracy.

Methods: 34 patients who underwent with FFF to repair mandibular defects were divided into Navigation Group (13 cases, using digital navigation and 3D printing model) and Control Group (21 cases, only 3D printing model).

Solar-Driven Nitrogen Fixation Catalyzed by Stable Radical-Containing MOFs: Improved Efficiency Induced by a Structural Transformation.

Herein we present a new viologen-based radical-containing metal-organic framework (RMOF) Gd-IHEP-7, which upon heating in air undergoes a single-crystal-to-single-crystal transformation to generate Gd-IHEP-8. Both RMOFs exhibit excellent air and water stability as a result of favorable radical-radical interactions, and their long-lifetime radicals result in wide spectral absorption in the range 200-2500 nm. Gd-IHEP-7 and Gd-IHEP-8 show excellent activity toward solar-driven nitrogen fixation, with ammonia production rates of 128 and 220 μmol h  g , respectively.

High-performance natural-sunlight-driven Ag/AgCl photocatalysts with a cube-like morphology and blunt edges via a bola-type surfactant-assisted synthesis.

Ag/AgCl-based structures have recently been receiving considerable attention as visible-light-driven plasmonic photocatalysts, wherein the fabrication of Ag/AgCl species shaped with an anisotropic morphology is considered to be an efficient way to enhance their performances. While the past decade has witnessed great progress in this direction, it is still strongly desired to initiate a green and low-cost protocol for the synthesis of Ag/AgCl based structures with high catalytic activity. Using a surfactant-assisted synthesis protocol, wherein a cationic bola-type surfactant of chloride counteranions serves both as a reactant (namely, source of chlorine) for the generation of AgCl structures and as a directing template to assist the formation of anisotropic structures, we herein report that cube-like Ag/AgCl with blunt edges could be fabricated simply by dropping an aqueous solution of silver nitrate into an ethanol solution of the hexane-1,6-bis(trimethylammonium chloride) surfactant.

Comparison of donor site complications of supra- versus subfascially harvested anterolateral thigh perforator free flaps: A meta-analysis.

Objective: This study aimed to compare the complications at the donor site of supra- versus subfascially harvested anterolateral thigh perforator free flaps.

Method: We searched PubMed, Web of Science, EMBASE, the Chinese BioMedical Literature Database (CBM) and the Cochrane Library until December 31, 2018, to identify studies that compared complications at the donor site of the supra- versus subfascially raised anterolateral thigh perforator free flaps. Two authors individually extracted the data and performed the quality assessments.

Quality of Life After Oral Cancer Resection and Free Flap Reconstruction.

Purpose: This study focused on quality of life for patients in northeast China who underwent oral cancer resection directly before flap reconstruction. In addition, this study compared differences among the radial forearm free flap (RFFF), ulnar forearm free flap (UFFF), and anterolateral thigh flap (ALTF) for defect reconstruction.

Materials And Methods: To assess patients' quality of life, the University of Washington Quality of Life and 14-item Oral Health Impact Profile (OHIP-14) questionnaires were completed 6 months after reconstruction.

Miniplates Versus Reconstruction Plates in Vascularized Osteocutaneous Flap Reconstruction of the Mandible.

Purpose: The main aim of this article is to compare the complication rate associated with the use of miniplates versus reconstruction plates in vascularized osteocutaneous flap reconstruction of the mandible.

Patients And Methods: The authors searched PubMed, Web of Science, EMBASE, Chinese BioMedical Literature Database (CBM), Cochrane Library, and clinicaltrials.gov up to September 2017 to identify studies that compared the complication rate of miniplates versus reconstruction plates in patients undergoing mandibular reconstruction.

The application of fibular free flap with flexor hallucis longus in maxilla or mandible extensive defect: a comparison study with conventional flap.

Background: The repair and reconstruction of maxillary and mandibular extensive defects have put huge challenges to surgeons. The fibular free flap (FFF) is one of the standard treatment choices for reconstruction. The conventional FFF has deficiencies, such as forming poor oral mucosa, limited flap tissue, and perforator vessel variation.

Comprehensive assessment of the donor-site of the anterolateral thigh flap: A prospective study in 33 patients.

Background: The anterolateral thigh (ALT) free flap has been an extremely versatile flap. The purpose of this study was to propose comprehensive functional assessments of the donor site.

Methods: A total of 33 ALT flaps were enrolled prospectively.

Elderly population have a decreased aneurysmal subarachnoid hemorrhage incidence rate than Middle aged population: a descriptive analysis of 8,144 cases in mainland China.

Purpose: Rupture of an intracranial aneurysm is a life-threatening acute cerebrovascular event. The purpose of this study was to investigate whether aneurysmal subarachnoid haemorrhage (SAH) incidence rate is higher or lower in elderly population than in middle aged population.

Materials And Methods: Aneurysmal SAH cases were collected retrospectively from the archives of 21 hospitals in Mainland China.

A comparison of mandible preservation method and mandibulotomy approach in oral and oropharyngeal cancer: A meta-analysis.

Objective: This study aims to compare the prognoses outcomes of mandibular preservation method (MPM) and the mandibulotomy approach (MLA) in oral and oropharyngeal cancer (OOPC) patients.

Method: We searched PubMed, Web of Science, EMBASE, Chinese BioMedical Literature Database (CBM), Cochrane Library, and clinicaltrials.gov up to September 2016 to identify the studies that compared the prognoses of the MPM versus the MLA in OOPC patients.

A critical assessment of the fibula flap donor site.

Background: The free fibula flap has become popular for mandibular reconstruction. The purpose of this study was to propose comprehensive functional assessments of the donor site.

Methods: Thirty free fibula flaps for mandible reconstruction were prospectively enrolled in the study.

Reconstruction of Complex Total Parotidectomy Defect With a Chimeric Anterolateral Thigh Perforator Flap and Vascularized Motor Branch of Femoral Nerve Grafting.

Reconstruction of complex total parotidectomy defects after ablation is always a challenge for surgeons. The surgical technique in reconstructing total parotidectomy defects using an anterolateral thigh (ALT) flap has not been described in detail. This report describes the treatment of a difficult case with a complex total parotidectomy defect.

Single Superficial versus Dual Systems Venous Anastomoses in Radial Forearm Free Flap: A Meta-Analysis.

Background: The radial forearm free flap (RFFF) has been widely used with increasing frequency in head and neck reconstruction following extirpative surgery. The controversy of the venous anastomoses patterns still exists. Thus, we conducted a meta-analysis to assess the relationship between the venous anastomoses patterns and venous compromise.

Transverse cervical vessels as recipient vessels in oral and maxillofacial microsurgical reconstruction after former operations with or without radiotherapy.

Background: The purpose of this study was to investigate the reliability and outcome of using the transverse cervical vessel (TCV) as a recipient vessel for microvascular reconstruction in patients whose vessels in the neck region are unavailable because of previous surgery or radiotherapy.

Methods: Between January 2012 and August 2014, secondary head and neck reconstruction was performed using the TCV as a recipient vessel in eight patients who had undergone previous neck dissection and radiation therapy (n = 5). Five patients had a recurrent carcinoma, one had undergone an operation for scar release and two had been treated surgically for a second primary cancer.

Total and near-total lower lip reconstruction: 20 years experience.

Background: Reconstruction of total and near-total lower lip defects presents a formidable challenge for the reconstructive plastic surgeon. Many methods have been described, and each has its own advantages and disadvantages. The aim of this article is to discuss the selection of techniques and report our experience of total or near-total lower lip reconstruction.