Results 31 to 40 of about 106,955 (321)

Reliability assessment in advanced nanocomposite materials for orthopaedic applications [PDF]

Journal of the Mechanical Behavior of Biomedical Materials, Volume 4, Issue 3, April 2011, Pages 303-314, 2018
Alumina-zirconia nano-composites were recently developed as alternative bearing materials for orthopedics. Previous, preliminary reports show that such alumina-zirconia nanocomposites exhibit high crack resistance and low wear rate. In this paper, additional information is given in terms of wear, crack resistance and ageing behaviour: femoral heads are
arxiv   +1 more source

A review of helochelydrid shell material from late Albian to early Cenomanian greensands of Southern England, United Kingdom

The Anatomical Record, EarlyView., 2022
Abstract A number of helochelydrid turtle shell remains were recovered over the course of the 19th century from mid‐Cretaceous sediments throughout Southern England, including the poorly figured and described types of Trachydermochelys phlyctaenus from the Cambridge Greensand of Cambridgeshire, Plastremys lata from the Upper Greensand of the Isle of ...
Walter G. Joyce
wiley   +1 more source

Finite element modelling of shock-induced damages on ceramic hip prostheses [PDF]

ISRN Materials Science (2011) ID 121486, 2012
The aim of this work was to simulate the behaviour of hip prostheses under mechanical shocks. When hip joint is replaced by prosthesis, during the swing phase of the leg, a microseparation between the prosthetic head and the cup could occur. Two different sizes of femoral heads were studied: 28 and 32 mm diameter, made, respectively, in alumina and ...
arxiv   +1 more source

Embryonic cranial cartilage defects in the Fgfr3Y367C/+ mouse model of achondroplasia

The Anatomical Record, EarlyView., 2023
Abstract Achondroplasia, the most common chondrodysplasia in humans, is caused by one of two gain of function mutations localized in the transmembrane domain of fibroblast growth factor receptor 3 (FGFR3) leading to constitutive activation of FGFR3 and subsequent growth plate cartilage and bone defects.
Susan M. Motch Perrine, Nishchal Sapkota, Kazuhiko Kawasaki, Yejia Zhang, Danny Z. Chen, Mizuho Kawasaki, Emily L. Durham, Yann Heuzé, Laurence Legeai‐Mallet, Joan T. Richtsmeier   +9 more
wiley   +1 more source

Factors associated with dislocation after total hip arthroplasties performed for nontraumatic osteonecrosis of the femoral head: a multicenter cohort study of 5,983 hips

Acta Orthopaedica
Background and purpose: Nontraumatic osteonecrosis of the femoral head (ONFH) patients are at a higher dislocation risk after primary total hip arthroplasties (THAs) than osteoarthrosis patients.
Seneki Kobayashi, Nobuhiko Sugano, Wataru Ando, Wakaba Fukushima, Kyoko Kondo, Takashi Sakai   +5 more
doaj   +1 more source

Fracture-dislocations of the femoral head

Orthopaedics & Traumatology: Surgery & Research, 2013
This review describes bone and nerve injury mechanisms during a femoral head fracture-dislocation and outlines a novel classification system that uses computed tomography scanning (CT scan) to help determine how to best treat these fractures in an emergency setting or in chronic cases.
Philippe Chiron, V. Lafontan, Nicolas Reina   +2 more
openaire   +3 more sources

Digital Photographic Measurements of the Proximal Femoral Anatomy

Siriraj Medical Journal, 2018
Objective: This study evaluated the morphology of the proximal femur in the Thai population, especially the femoral head-neck relationship and the femoral neck-shaft relationship, using digital photographs.
Sarut Waranuchitkul, Pisit Lertwanich
doaj   +3 more sources

A Dataset for Deep Learning-based Bone Structure Analyses in Total Hip Arthroplasty [PDF]

arXiv, 2023
Total hip arthroplasty (THA) is a widely used surgical procedure in orthopedics. For THA, it is of clinical significance to analyze the bone structure from the CT images, especially to observe the structure of the acetabulum and femoral head, before the surgical procedure.
arxiv  

The Impact of Varying Femoral Head Length on Hip External Rotation During Posterior-approach Total Hip Arthroplasty

Arthroplasty Today, 2023
Background: Prior investigations of total hip arthroplasty (THA) have studied the effects of prosthetic femoral head size and stem offset on hip range of motion (ROM), impingement risk, and overall hip stability to optimize the return to activities of ...
Seong J. Jang, BA, Christopher Jones, PhD, MBBS (Hons), Kate Shanaghan, BS, David J. Mayman, MD, Alejandro Gonzalez Della Valle, MD, Peter Keyes Sculco, MD   +5 more
doaj  

Efficacy of artificial femoral head replacement for femoral head avascular necrosis

Medicine, 2019
Abstract Background: Femoral head avascular necrosis (FHAN) is one of the most common progressive orthopedic disorders. Previous studies have reported that artificial femoral head replacement (AFHR) can effectively treat patients with FHAN. However, no systematic review has investigated the efficacy of AFHR for FHAN. This study
Shou-Feng Wang, Xue Yu, Peng Zhao, Ji Qinghui, Xiao-Feng Qiao, Yan-Bao Li   +5 more
openaire   +3 more sources