The aim of the work is to establish the regularity of the formation femoral diaphysis fracture under an impact action on the anterior surface of the femur at an acute angle. As a result of mathematical modeling, transverse and short oblique, comminuted fractures of the femoral diaphysis were studied. Application of mathematical modeling with final element analysis made it possible to visualize and predict the stresses arising in the trace-perceiving material under the impact action of a blunt solid object. The data obtained in modeling of the mechanism and morphology of the femoral diaphysis fracture are confirmed by the results of the original full-scale experiments. Absence of experiments and practical observations of femoral fractures with the above described conditions does not enable us to fully validate the mathematical model of femoral fracture and indicates the need for scientific research on biomannequins.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.17116/sudmed20226506137 | DOI Listing |
Purpose: To create tridimensional (3D) anatomical models of diaphyseal fractures in dogs (3D AMDFD) and to evaluate the models from their radiographs.
Methods: The study consisted of six stages: preparation of femur from a healthy dog cadaver; digitalization of the bone through a 3D scanner and creation of the base model; creation of a 3D AMDFD based on the image of the base model, 3D modeling carried out to reproduce five different types of diaphyseal fractures; printing the models produced on a 3D printer with a thermoplastic material; insertion of neodymium magnets in the fracture line to allow the assembly and disassembly of the parts; and radiography of 3D AMDFD in lateromedial and craniocaudal positions.
Results: The base model and 3D AMDFD had high precision in the replication of bone structures, like the bone in natura.
J Pediatr Orthop
January 2025
Department of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, NY.
Objective: Artificial intelligence (AI) chatbots, including chat generative pretrained transformer (ChatGPT) and Google Gemini, have significantly increased access to medical information. However, in pediatric orthopaedics, no study has evaluated the accuracy of AI chatbots compared with evidence-based recommendations, including the American Academy of Orthopaedic Surgeons clinical practice guidelines (AAOS CPGs). The aims of this study were to compare responses by ChatGPT-4.
View Article and Find Full Text PDFChem Pharm Bull (Tokyo)
January 2025
Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Ltd.
Osteoporosis is caused by an imbalance between bone resorption and formation, which decreases bone mass and strength and increases the risk of fracture. Therefore, osteoporosis is treated with oral resorption inhibitors, such as bisphosphonates, and parenteral osteogenic drugs, including parathyroid hormone and antisclerostin antibodies. However, orally active osteogenic drugs have not yet been developed.
View Article and Find Full Text PDFJ Orthop Case Rep
January 2025
Department of Pathology, All India Institute of Medical Sciences Bhopal, Bhopal, Madhya Pradesh, India.
Introduction: Neuroblastoma is an embryonic tumor of the peripheral sympathetic nervous system. It is the most common extracranial solid tumor of childhood and accounts for up to 15% of all pediatric cancer fatalities. The manifestation of neuroblastoma is variable depending on the location of the tumor and the presence or absence of paraneoplastic syndromes.
View Article and Find Full Text PDFObjectives: To compare lag-screw slide and revision surgery rate between two generations of the Stryker Gamma cephalomedullary nail (Stryker, Kalamazoo, MI).
Methods: Design: Retrospective chart review.
Setting: Single academic, Level-1 Trauma Center.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!