نتایج جستجو برای: biomechanical properties

تعداد نتایج: 885026  

2018
Christopher McCrum Pamela Leow Gaspar Epro Matthias König Kenneth Meijer Kiros Karamanidis

Tendons transfer forces produced by muscle to the skeletal system and can therefore have a large influence on movement effectiveness and safety. Tendons are mechanosensitive, meaning that they adapt their material, morphological and hence their mechanical properties in response to mechanical loading. Therefore, unloading due to immobilization or inactivity could lead to changes in tendon mechan...

Journal: :Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2012
Gregory N Nelson Ryan Potter Eleni Ntouvali Matthew J Silva Martin I Boyer Richard H Gelberman Stavros Thomopoulos

To improve the functional outcomes of intrasynovial tendon suture, prior experiments evaluated individual technical modifications used in the repair process. Few studies, however, have assessed the combinatorial effects of those suture modifications in an integrated biomechanical manner, including a sample size sufficient to make definitive observations on repair technique. Two hundred fifty-si...

Journal: :Journal of biomechanical engineering 2004
Naomi C Chesler John Thompson-Figueroa Ken Millburne

BACKGROUND Robust techniques for characterizing the biomechanical properties of mouse pulmonary arteries will permit exciting gene-level hypotheses regarding pulmonary vascular disease to be tested in genetically engineered animals. In this paper, we present the first measurements of the biomechanical properties of mouse pulmonary arteries. METHOD OF APPROACH In an isolated vessel perfusion s...

Journal: :Journal of applied physiology 2009
Heng Zhao Yupeng Ren Yi-Ning Wu Shu Q Liu Li-Qun Zhang

Spasticity, contracture, and muscle weakness are commonly observed poststroke in muscles crossing the ankle. However, it is not clear how biomechanical properties of the Achilles tendon change poststroke, which may affect functions of the impaired muscles directly. Biomechanical properties of the Achilles tendon, including the length and cross-sectional area, in the impaired and unimpaired side...

2016
Kursat Atalay Isil Ustun Kubra Serefoglu Cabuk Ahmet Kirgiz Ilhan Karacan Muhittin Taskapili

The aim of this study was to investigate the corneal alterations occurring in rheumatoid arthritis (RA) patients compared with healthy subjects and to define the presence of biomechanical alterations in cornea accompanying dry eye disease, the most common ocular manifestation of RA. Forty-seven RA patients and 40 control cases without any known systemic or ocular diseases were included in this ...

2018
Celal Bozkurt Alpaslan Şenköylü Erdem Aktaş Baran Sarıkaya Serkan Sipahioğlu Rıza Gürbüz Muharrem Timuçin

Objectives Cage design and material properties play a crucial role in the long-term results, since interbody fusions using intervertebral cages have become one of the basic procedures in spinal surgery. Our aim is to design a novel Apatite-Wollastonite interbody fusion cage and evaluate its biomechanical behavior in silico in a segmental spinal model. Materials and Methods Mechanical properti...

Journal: :Veterinary surgery : VS 2017
Michele A Steffey Tanya C Garcia Leticia Daniel Allison L Zwingenberger Susan M Stover

OBJECTIVE To determine the influence of neoplasia on the biomechanical properties of canine antebrachia. STUDY DESIGN Ex vivo biomechanical study. SAMPLE POPULATION Osteosarcoma (OSA)-affected canine antebrachia (n = 12) and unaffected canine antebrachia (n = 9). METHODS Antebrachia were compressed in axial loading until failure. A load-deformation curve was used to acquire the structural...

2016
Yusuf Yıldırım Onur Ölçücü Abdurrahman Başcı Alper Ağca Engin Bilge Özgürhan Cengiz Alagöz Ali Demircan Ahmet Demirok

OBJECTIVES To compare the postoperative biomechanical properties of the cornea after photorefractive keratectomy (PRK) and small incision lenticule extraction (SMILE) in eyes with low and moderate myopia. MATERIALS AND METHODS We retrospectively examined 42 eyes of 23 patients undergoing PRK and 42 eyes of 22 patients undergoing SMILE for the correction of low and moderate myopia. Corneal hys...

Journal: :Journal of biomechanics 2005
Ely L Steinberg Nehemia Blumberg Shmuel Dekel

The treatment of choice for early mobilization of hip fracture is surgery, which traditionally employs side plates and screws or intramedullary nails. We examined the biomechanical properties of a new proximal femoral nail system. The new expandable Fixion proximal femur nailing (PFN) system, made of stainless-steel alloy, consists of a nail, a peg and an anti-rotation pin. Upon positioning, th...

2018
Iris Ribitsch Christian Peham Nicole Ade Julia Dürr Stephan Handschuh Johannes Peter Schramel Claus Vogl Heike Walles Monika Egerbacher Florien Jenner

Meniscal pathologies are among the most common injuries of the femorotibial joint in both human and equine patients. Pathological forces and ensuing injuries of the cranial horn of the equine medial meniscus are considered analogous to those observed in the human posterior medial horn. Biomechanical properties of human menisci are site- and depth- specific. However, the influence of equine meni...

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