نتایج جستجو برای: trabecular pattern

تعداد نتایج: 355873  

Journal: :BioMedical Engineering OnLine 2005
Thomas Pressel Anas Bouguecha Ute Vogt Andrea Meyer-Lindenberg Bernd-Arno Behrens Ingo Nolte Henning Windhagen

BACKGROUND Studying mechanical properties of canine trabecular bone is important for a better understanding of fracture mechanics or bone disorders and is also needed for numerical simulation of canine femora. No detailed data about elastic moduli and degrees of anisotropy of canine femoral trabecular bone has been published so far, hence the purpose of this study was to measure the elastic mod...

Journal: :Journal of biomechanical engineering 2015
Ara Nazarian Blaine A Christiansen

Trabecular bone is a crucial and unique load-bearing tissue in the skeleton found near the ends of long bones and in the vertebral bodies. Trabecular bone has the ability to rapidly adapt to the mechanical loading environment by optimizing its mass and structure in order to bear high loads with as little bone tissue as possible, allowing bones to remain strong while minimizing their weight. Mea...

Journal: :Journal of biomechanics 1992
K Choi S A Goldstein

The fatigue properties of trabecular bone tissue (single trabeculae) and similarly sized cortical bone specimens from human tibia were experimentally determined on a microstructural level using four-point bending cyclic tests, and they were compared based on modulus, mineral density, and microstructural characteristics. The results showed that trabecular specimens had significantly lower moduli...

2015
Takeshi OHTA Shuichi KIMURA Masaya HIRATA Takahisa YAMADA Toshie SUGIYAMA

The Spontaneously Diabetic Torii (SDT) fatty rat, a model for obese type 2 diabetes, shows bone quantitative abnormalities, namely low bone mineral density (BMD). The objective of this study was to evaluate bone morphological changes, in particular identifying the bone qualitative abnormalities, in the SDT fatty rat. Male SDT fatty rats showed increases in total trabecular area and trabecular n...

Journal: :Investigative ophthalmology 1968
W H Spencer J Alvarado T L Hayes

Scanning electron microscopic studies of the trabecular meshwork are presented and discussed which suggest that the trabecular endothelium is distinctly different from the corneal endothelium. The trabecular endothelial cells appear to be larger, with less prominent cell borders, and to have a thinner basement membrane than the corneal endothelial cells. The transition between the two types of ...

Journal: :Investigative ophthalmology 1975
M F Armaly Y Wang

The ability to demonstrate AMPS in the trabecular region in the normal eye of the Rhesus monkey was shown to be critically dependent upon technical variation. Staining the fixed specimen prior to dehydration and embedding permits the uniform demonstration of AMPS in the trabecular region of the Rhesus monkey and shows it to be hyaluronidase-sensitive. Electron microscopy using the modified tech...

Journal: :ORL; journal for oto-rhino-laryngology and its related specialties 2013
Brittany E Howard Sharon H Gnagi I Tolgay Ocal Michael L Hinni

BACKGROUND/AIMS Hyalinizing trabecular tumors are rare neoplasms of the thyroid gland often mistaken for thyroid carcinoma on fine-needle aspiration. We review the distinguishing characteristics of hyalinizing trabecular tumors and their management. METHODS We present the case of a patient diagnosed with papillary thyroid carcinoma on fine-needle aspiration as well as a review of the literatu...

Journal: :Journal of anatomy 2006
E Tanck G Hannink R Ruimerman P Buma E H Burger R Huiskes

Longitudinal growth of long bones takes place at the growth plates. The growth plate produces new bone trabeculae, which are later resorbed or merged into the cortical shell. This process implies transition of trabecular metaphyseal sections into diaphyseal sections. We hypothesize that the development of cortical bone is governed by mechanical stimuli. We also hypothesize that trabecular and c...

Journal: :Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2011
Helene Follet Stéphanie Viguet-Carrin Brigitte Burt-Pichat Baptiste Dépalle Yohann Bala Evelyne Gineyts Francoise Munoz Monique Arlot Georges Boivin Roland D Chapurlat Pierre D Delmas Mary L Bouxsein

Previous studies have shown that the mechanical properties of trabecular bone are determined by bone volume fraction (BV/TV) and microarchitecture. The purpose of this study was to explore other possible determinants of the mechanical properties of vertebral trabecular bone, namely collagen cross-link content, microdamage, and mineralization. Trabecular bone cores were collected from human L2 v...

Journal: :Journal of biomechanics 1995
B van Rietbergen H Weinans R Huiskes A Odgaard

The apparent mechanical behavior of trabecular bone depends on properties at the tissue or trabecular level. Many investigators have attempted to determine trabecular tissue properties and loading. However, accuracy and applicability of all methods reported are limited. The small size of the trabeculae and a possible size effect are complicating factors when using traditional testing methods on...

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