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Two types of cannulated screw fixation based on Letenneur classification for the treatment of Hoffa fracture: A finite element analysis.
J Orthop Sci
January 2025
Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, China. Electronic address:
Purpose: A finite element analysis was performed to simulate the biomechanical differences between anterior-posterior (AP) direction and posterior-anterior (PA) direction placement of two cannulated screws in Hoffa fractures.
Methods: Computed tomography images of an healthy male volunteer were used to simulate Letenneur Ⅰ, Ⅱa, Ⅱb, Ⅱc, Ⅲ Hoffa fractures, and two groups of screw internal fixation models were constructed. Two 6.
Enhancing the affinity of Pb(II) to the metastable ferrihydrite with the presence of gallic acid and anoxia condition.
J Environ Manage
January 2025
School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China. Electronic address:
Naturally widespread ferrihydrite is unstable and often coexists with complex ions, such as the heavy metal ion Pb(II). Ferrihydrite could fix Pb(II) by precipitation and hydroxyl adsorption, but release Pb(II) with mineral aging. Gallic acid plays an important role in influencing the geochemical behavior of ferrihydrite-Pb, and anoxia is one of the factors influencing the transformation of mineral.
View Article and Find Full Text PDFSurgical Treatment of Coronoid Fracture With Elbow Varus Posteromedial Rotatory Instability: An Instructional Review.
Orthop Surg
January 2025
Tianjin Hospital, Tianjin, China.
Varus posteromedial rotatory instability (VPMRI) of the elbow is one of the complex elbow instability. The primary sites of injury encompass fractures of the anteromedial coronoid process and injuries to the lateral collateral ligament of the elbow. Some patients may present with involvement of the medial collateral ligament of the elbow.
View Article and Find Full Text PDFComparative 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.
Extensible lateral approach versus sinus tarsi approach for sanders type II and III calcaneal fractures osteosynthesis: a randomized controlled trial of 186 fractures.
J Orthop Surg Res
January 2025
Orthopaedic Department, Assiut Faculty of Medicine, Assiut University Hospital, Assiut University, Kasr Elini Street, Number 7, P.O. Box 110, Assuit, 71515, Egypt.
Aims: Which is the best extensile lateral (ELA) or sinus tarsi (STA) approach for osteosynthesis displaced intraarticular calcaneal fracture (DIACF) is still debatable. The current RCT's primary objective was to compare the complications incidence after open reduction and internal fixation of DIACFs through STA vs. ELA.
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