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Revealing the Effects of Tympanic Membrane Implant Mechanical Properties on High-Frequency Hearing Loss After Clinical Myringoplasty: A Finite Element Analysis.
Int J Numer Method Biomed Eng
March 2025
School of Aerospace Engineering, Tsinghua University, Beijing, People's Republic of China.
Myringoplasty is most commonly used to treat tympanic membrane (TM) perforation. Clinical data have shown that unexplained high-frequency (above 3 kHz) hearing loss often occurs after myringoplasty. In this paper, a finite element (FE) model of the partial external and middle ear (ME) of the human ear, which considers the actual perforation and TM implants, is developed to reveal the mechanical mechanism of high-frequency hearing loss after implantation of temporalis fascia and cartilage commonly used in myringoplasty.
View Article and Find Full Text PDFComputational evaluation of the biomechanical effects of position changes in the femoral neck system on Pauwels type III femoral neck fractures: an in silico study.
Front Bioeng Biotechnol
February 2025
Department of Orthopedics, Luzhou Longmatan District People's Hospital, Luzhou, Sichuan, China.
Introduction: Despite the biomechanical advantages of the Femoral Neck System (FNS), improvements in postoperative complication rates have not been significant. This study evaluated the effects of different FNS positions on the biomechanical stability of Pauwels type III femoral neck fractures (FNFs) using finite element analysis (FEA).
Methods: Pauwels type III FNF models fixed with different FNS positions were constructed using various bolt lengths, bolt positions, and axis-bolt angles.
Surgical complications and quality of life according to the extent of neck dissection in patients treated for oral squamous cell carcinoma.
Clin Oral Investig
March 2025
Department of Oral and Maxillofacial Surgery, Charité- Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
Objective: Quality of life (QoL) and the degree of postoperative morbidity is an important aspect for patients suffering from oral squamous cell carcinoma (OSCC), which can be affected by several aspects of cancer treatment and especially the extent of surgical therapy. The aim of this study was to evaluate the clinical outcome and QoL in patients in relation to different types of neck dissection (ND) for OSCC.
Materials And Methods: In this observational single center cohort study, OSCC patients who underwent primary resection and ND between 2017 and 2022 were included and assessed for postoperative complications.
Passive neck brace for surgeons.
Ann N Y Acad Sci
March 2025
Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
A surgeon peers downward into a body cavity when operating. Holding this position for hours across weeks, months, and years may lead to neck pain and musculoskeletal disorders. We were inspired by ungulates such as giraffes and horses, which use dorsal-ventral flexion to graze for 9-14 h per day without perceivable neck pain.
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