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Comparative finite element analysis: internal fixation plate versus intramedullary nail for neer type III-VI proximal humeral fractur.
J Orthop Surg Res
January 2025
Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, 8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing, 100020, China.
Background: Finite element analysis (FEA) could advance the understanding of fracture fixation and guide the choice of surgical treatment. This study aimed to compare two internal fixation methods in the treatment of displaced proximal humeral fracture (PHF) through FEA.
Methods: Three-dimensional FEA model based on the left shoulder joint of a 67-year-old female patient with PHFs and osteoporosis was adopted, in order to analyze the fixation effect and load stress distribution of internal fixation plates with open reduction and intramedullary nails without opening the fracture in the treatment of Neer III-VI PHF.
Distinct Charge and Spin Recovery Dynamics in a Photoexcited Mott Insulator.
Phys Rev Lett
December 2024
Harish-Chandra Research Institute, A CI of Homi Bhabha National Institute, Chhatnag Road, Jhusi, Allahabad 211019, India.
Pump-probe response of the spin-orbit coupled Mott insulator Sr_{2}IrO_{4} reveals a rapid creation of low-energy optical weight and suppression of three-dimensional magnetic order on laser pumping. Postpump there is a quick reduction of the optical weight but a very slow recovery of the magnetic order-the difference is attributed to weak interlayer exchange in Sr_{2}IrO_{4} delaying the recovery of three-dimensional magnetic order. We suggest that the effect has a very different and more fundamental origin.
View Article and Find Full Text PDFAccuracy, Reproducibility, and Gaps in Different Angulations of 3D-Printed versus Milled Hybrid Ceramic Crown.
Eur J Dent
December 2024
Division of Restorative Dentistry, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand.
Objectives: This article compared the accuracy, reproducibility, and gap of crowns resulting from variations in print angulation of three-dimensional (3D)-printed VarseoSmile Crown (VS) and milled resin-ceramic hybrid materials (Cerasmart 270, CS, and Enamic, E).
Materials And Methods: A total of 60 specimens, consisting of VS printed at four different angulations (30, 45, 60, and 90 degrees), along with CS and E were investigated. External and internal accuracy and reproducibility were measured with the 3D deviation analysis.
3D-printed porous titanium versus polyetheretherketone cages in lateral lumbar interbody fusion: a systematic review and meta-analysis of subsidence.
Front Med (Lausanne)
December 2024
Department of Orthopedics, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Article Synopsis
- Cage subsidence can negatively affect lumbar fusion procedures, with material selection (PEEK vs. 3D-Ti) influencing this issue; the study aims to compare their subsidence rates.
- The systematic search reviewed 265 patients from three high-quality studies, focusing on cage subsidence and classified subsidence rates using a specific method.
- Results indicated that 3D-Ti cages have a significantly lower rate of subsidence compared to PEEK cages, with less severe subsidence and better overall performance.
Vein watershed analysis locational method versus computed tomography-guided percutaneous localization for detecting non-palpable peripheral pulmonary nodules: a real-world study of non-inferiority.
Interdiscip Cardiovasc Thorac Surg
December 2024
Guangdong Lung Cancer Institute, Guangdong Provincial Key Laboratory of Translational Medicine in Lung Cancer, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
Objectives: In recent years, with the advancement of sublobar resection, A safe, painless method for locating peripheral pulmonary nodules is required. Previously, an alternative method of arterial watershed localization was been introduced to remedy the shortcomings of preoperative CT-guided localization or other methods for locating pulmonary nodules, but its technical limitations were discovered during clinical application. Therefore, we innovated a technique to localize non-subpleural nodules using basin analysis of the target vein and validated its feasibility and safety.
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