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Bone Cement Articles & Analysis
18 articles found
As technology advances, surgeons now have choices in how they fixate the prosthesis to the bone. The two primary techniques are cemented fixation and cementless fixation (also called uncemented fixation). ...
The Brisbane-based designer of the world’s smallest orthopaedic screw has invoiced US hospital suppliers $900,000 in the three weeks since the device gained Food & Drug Administration approval, and he hopes it can soon be made in Brisbane too. Field Orthopaedics, founded in 2016 by former Army doctor Chris Jeffery alongside a team of doctors and engineers including hand surgeon Greg ...
PMMA has been used as a tough substitute for glass, and has been used in medicine as bone cement and to replace eye lenses. Polytetrafluoroethylene (PTFE) Since PTFE has one of the lowest coefficients of friction against any solid, it is the perfect material to use for non-stick coating. ...
These early frustrations with the time it took to remove bone cement drew him to the mechanical engineering department at University of Sydney. ...
The Indian Medical Devices industry is mostly import-dependent with no specific regulations in place till recent times. With the introduction of MDR (Medical Device Rules 2017) attempt has been made to harmonize the Indian medical device Industry as per globally prevailed ...
PMMA bone cements are widely used in orthopaedics, but questions remain as to their long term durability. Although fatigue of bone cements has been widely studied, the effects of variable amplitude loading are not fully understood. ...
In literature reports on strontia-containing PMMA bone cements, the strontia was combined with another material, micron-sized particles were used and in vitro fatigue data are sparse. The present report is on the in vitro characterisation of a strontia-containing PMMA bone cement in which nano-sized strontia particles that were ...
Polymethylmethacrylate bone cement is a widely utilised material in the field of orthopaedic surgery and specifically total joint arthroplasty. ...
During the first few days, the gentamicin release was comparable to the elution of this antibiotic from commercially available PMMA bone cements. Compared to PMMA cements, the implants coated with the gentamicinpalmitate completely released the gentamicin within the first five to eight days. Both uncemented implants with a gentamicinpalmitate ...
Mixing techniques used to reduce porosity in bone cement demonstrate large improvements in fatigue behaviour in test specimens, but do not appear to reduce the rate of loosening of implants in vivo. We examined data showing the effect of notches on fatigue strength and found, surprisingly, that notches with low stress-concentration factors (Kt Keywords: mixing ...
This study investigated methyl methacrylate – polymethyl methacrylate powder bed interactions through droplet analyses, using model fluids and commercially available bone cement. The effects of storage temperature of liquid monomer and powder packing configuration on drop penetration time were investigated. ...
The gentamicin (as sulphate) of well known antibiotic impregnated bone cements and the gentamicin of the novel coating (as palmitate) that is described show comparable anti-infective behaviour within the proliferation assay according to ISO DIN EN 17025. Furthermore, the gentamicinpalmitate coating is biocompatible according to ISO DIN EN 10993.Keywords: ...
In this study, it was shown that the concept of autonomic healing of a neat polymeric material, which was introduced by White et al. (2001) could be applied to poly methyl methacrylate (PMMA) bone cement. The bone cement brand used – Surgical Simplex®P – is one that is widely used in cemented arthroplasties; ...
In the present study, we demonstrate biotoxicity test of bone cement based on functionalised carbon nanotube reinforced PMMA/HA for next generation biomedical applications. ...
One of the primary reasons for joint replacement failure is fracture of the bone cement mantle. The objective of this study was to determine the effects of improving the dispersion of montmorillonite nanoclay in acrylic bone cement (by using coating technology) on the mechanical properties of the cured nanocomposite ...
The principal mode of loosening of joint replacements is bone cement mantle failure, which is made worse with formation of microcracks under mechanical load. ...
A combination of Hydroxyapatite (HA), Polymethylmethacrylate (PMMA) and Carbon Nanotubes (CNTs) was used to synthesize a new composite material, which is superior in mechanical properties to the conventional HA as a biomedical scaffold in tissue engineering. PMMA is well-known as a bone cement highly compatible with HA and can act as a functionalising/linking ...
Research conducted by the medical community into calcium phosphate based cement for bone and teeth repair has been applied to theories of calcium phosphate precipitation and crystal growth. ...