Micromechanical modelling for bending behaviour of novel bioinspired alumina-based dental composites.

The clinical failure mode of dental crown ceramics involves radial cracking at the interface, driven by the surface tension generated from the flexure of the ceramic layer on the subsurface. This results in a reduced lifespan for most all-ceramic dental crowns. Therefore, investigating optimal material combinations to reduce stress concentration in dental crown materials has become crucial for future successful clinical applications.

Amphibious Polymer Materials with High Strength and Superb Toughness in Various Aquatic and Atmospheric Environments.

Herein, the fabrication of amphibious polymer materials with outstanding mechanical performances, both underwater and in the air is reported. A polyvinyl alcohol/poly(2-methoxyethylacrylate) (PVA/PMEA) composite with multiscale nanostructures is prepared by combining solvent exchange and thermal annealing strategies, which contributes to nanophase separation with rigid PVA-rich and soft PMEA-rich phases and high-density crystalline domains of PVA chains, respectively. Benefiting from the multiscale nanostructure, the PVA/PMEA hydrogel demonstrates excellent stability in harsh (such as acidic, alkaline, and saline) aqueous solutions, as well as superior mechanical behavior with a breaking strength of up to 34.

The clinical efficacy of Shengyu decoction in the treatment of anemia after PFNA for elderly intertrochanteric fracture: A protocol of prospective, randomized, controlled trial.

Background: Femoral intertrochanteric fractures (ITF) occur frequently in the elderly, accounting for 45% of all hip fractures. Postoperative anemia after fracture tends to cause ischemia, hypoxia in cells, tissues and organs, increasing the rate of blood transfusion, risk of infection, disability and mortality. Meanwhile, traditional Chinese medicine is widely used in the treatment of anemia for activating blood circulation and removing blood stasis.

Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations.

Objective: To fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer.

Method: Bi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer.

Implementation of Enhanced Recovery After Surgery (ERAS) protocol for elderly patients receiving surgery for intertrochanteric fracture: a propensity score-matched analysis.

Purpose: Enhanced Recovery After Surgery (ERAS) is a multimodal approach to perioperative care that aims to reduce patient perioperative complications, accelerate patient recovery, and improve patient satisfaction by refining and optimizing all perioperative management processes. By comparing two groups of patients before and after the implementation of ERAS for intertrochanteric fracture (ITF) with a matching analysis of propensity score (PS), we aimed to demonstrate that the implementation of ERAS protocol shortens the length of hospital stay (LOS), reduces pain, decreases the incidence of postoperative complications, and promotes functional recovery of the joint.

Methods: We selected 2 periods of 1 year, before (n=98patients) and after ERAS implementation (n=92patients).

The efficacy of Enhanced Recovery after Surgery (ERAS) for elderly patients with intertrochanteric fractures who received surgery: study protocol for a randomized, blinded, controlled trial.

Background: Intertrochanteric fracture (ITF) is increasing with the rapid increase in the aging population, often causes a high mortality rate in old patients and increases the economic burden of the family and society. ERAS (Enhanced Recovery after Surgery) is a powerful guarantee for patients to accelerate their recovery after surgery. TCM (traditional Chinese medicine) promotes repair of injured tissues and eliminates traumatic aseptic inflammation.

A retrospective evaluation of reliability and reproducibility of Arbeitsgemeinschaftfür Osteosynthesefragen classification and Fernandez classification for distal radius fracture.

This is a retrospective evaluated. The objective of this study was to test the interobserver reliability and intraobserver reproducibility of fracture classification with Arbeitsgemeinschaftfür Osteosynthesefragen (AO) system and Fernandez system used by 5 senior orthopedic surgeons.Anteroposterior and lateral radiographs of 160 patients hospitalized for displaced distal radius fracture were examined.

[Analysis of correlation between the cervical spinal cord compression and the change of cervical intervertebral disc space, curvature of cervical vertebrae].

Objective: To discuss the correlation between the degree of cervical spinal cord compression and gender, age, height of intervertebral space and the abnormality curvature of cervical vertebrae. The multivariable linear regression was used to build the prediction model of cervical spinal cord compression.

Methods: One hundred and twenty patients with cervical spondylosis were divided into 4 groups according to the degree of spinal cord compression.