BACKGROUND The purpose of this study was to investigate the stability of dual-taper modular implants following impaction forces delivered at varying locations as measured by the distraction forces required to disassemble the components. METHODS Distraction of the head-neck and neck-stem (NS) tapers of dual-taper modular implants with 0°, 8°, and 15° neck angles were measured utilizing a custo...

The purpose of this paper is to establish fixed point results for a single mapping in a partially ordered modular metric space, and to prove a common fixed point theorem for two self-maps satisfying some weak contractive inequalities.

in this paper, we associate canonically a precyclic mod- ule to a regular multiplier hopf algebra endowed with a group-like projection and a modular pair in involution satisfying certain con- dition

The effect of frequency content on the dynamic response of concrete gravity dams is investigated in this paper. Dams are one of the most complex structures to handle when there is dynamic analysis involved. One of the influential parameters on these structureschr('39') seismic response is the frequency content of the earthquakes. An index to represent frequency content, which represents frequen...

Computer-assisted surgery (CAS) has been introduced in hip replacement to improve the precision of the acetabular and femoral components and hopefully to improve prosthesis longevity and biomechanics. Likewise the concept of shorter “neck-sparing” femoral stems has been gaining in popularity. These new designs preserve more native bone in the femoral neck of the patient during femoral preparati...

© 2016 The Author(s). Published by Taylor & Francis on behalf of the Nordic Orthopedic Federation. This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (https://creativecommons.org/licenses/by-nc/3.0) DOI 10.3109/17453674.2015.1128780 (McGrory et al. 2015, Bishop et al. 2013). No mechanical implant failures (i.e. fractures) have b...

Heterogeneous nuclear ribonucleoproteins (hnRNPs) comprise a large group of modular RNA-binding proteins classified according to their conserved domains. This modular nature, coupled with a large choice of alternative splice variants generates functional diversity. Here, we investigate the biological differences between 40LoVe, its splice variant Samba and its pseudoallele hnRNP AB in neural de...

This report addresses a new case of a modular femoral neck fracture after total hip arthroplasty. A now seventy-three-year- old overweight female underwent total hip replacement of the right hip because of osteoarthritis in the year 2002. Then, years later, the head and the polyethylene were changed due to wear. In October 2014, the patient was transferred from the trauma department of her home...

We examined 108 uncemented femoral stems with modular femoral heads which had been retrieved for reasons other than loosening. There were detectable amounts of wear and corrosion in 10 of 29 (34.5%) mixed-alloy components and 7 of 79 (9%) single-alloy components after a mean implantation time of 25 months. We found no correlation between the presence or extent of corrosion or surface damage and...