Transition of deformation modes from bending to auxetic compression in origami-based metamaterials for head protection from impact.

For the protection of the human head by energy absorption structures, a soft mechanical response upon contact with the head is required to mitigate the effect of impact, while a hard mechanical response for highly efficient energy absorption is required to stop the movement of the head. This study realized the opposite mechanical properties during head protection by transitioning the deformation mode from bending to auxetic compression. First, non-linear finite element (FE) models were constructed to numerically reproduce the bending behavior.

[An Abscopal Effect after Palliative Radiotherapy in a Patient with a Locally and Lymph Node Recurrent Gastric Cancer].

Radiotherapy is known to have a high local effect for cancer treatment. However, several reports that radiotherapy could stimulate the anti-tumor effect by releasing endogenous signals and cytokines, increasing the presentation of tumor associated antigens on dendritic cells, and proliferating tumor antigen-specific cytotoxic T lymphocytes have been shown. A tumor regression in both non-irradiated and irradiated fields have observed, which is called"abscopal effect".

Comparing exposed and buried Kirschner wires in fixation for pediatric supracondylar humerus fractures: A propensity score-matched study.

Purpose: To thoroughly compare the outcomes between exposed and buried Kirschner wires (K-wires) in fixation for pediatric supracondylar humerus fractures.

Methods: We examined patients who underwent surgery at our institution between January 2007 and June 2021. We investigated their age, sex, fracture pattern, number of K-wires used, whether they were exposed or buried, operative time, postoperative complications, number of outpatient visits, duration from surgery to K-wire removal, total length of hospitalization, and perioperative radiographic parameters.

Radiological Outcomes of the Simplified Sauvé-Kapandji Procedure for Osteoarthritis of the Distal Radioulnar Joint.

We have been using a simplified Sauvé-Kapandji (SK) procedure using a headless compression screw for the treatment of osteoarthritis (OA) of the distal radio-ulnar joint (DRUJ). Unlike a standard SK procedure, the simplified SK procedure does not require exposure of the DRUJ to prepare the opposing surfaces of the sigmoid fossa and the ulnar head or any procedures to stabilise the proximal stump of the ulna. The aim of this study is to report the radiological outcomes of the simplified SK procedure.

Epidemiology of trauma-related paediatric limb fracture using a unique classification: A 10-year retrospective, single-centre study.

Introduction: Research regarding the epidemiology of paediatric trauma is limited. Using our unique classification, we describe paediatric trauma cases in a 10-year single-centre study to improve paediatric care.

Materials And Methods: Data regarding all paediatric trauma cases were extracted using a computerised medical record system that detected fracture diagnosis and epiphyseal injury.