Effects of the initial temperature of acrylic bone cement liquid monomer on the properties of the stem-cement interface and cement polymerization

2004 ◽  
Vol 68B (2) ◽  
pp. 186-190 ◽  
Author(s):  
K. Iesaka ◽  
W. L. Jaffe ◽  
F. J. Kummer
Keyword(s):  
Bone Cement ◽  
Initial Temperature ◽  
Acrylic Bone Cement ◽  
Cement Interface

Reduced Modulus Acrylic Bone Cement

1985 ◽  
Vol 55 ◽  
Author(s):  
Alan S. Litsky ◽  
Robert M. Rose ◽  
Clinton T. Rubin
Keyword(s):  
Bone Cement ◽  
Cancellous Bone ◽  
Property Testing ◽  
Acrylic Bone Cement ◽  
Material Interfaces ◽  
Cement Interface ◽  
Reduced Modulus ◽  
Endoprosthesis Loosening

ABSTRACTLoosening is the dominant long-term problem facing joint replacement surgeons and patients. A probable cause of endoprosthesis loosening is the strain singularity at the material interfaces. The concentration of shear at the bone-cement interface leads to micromotion which precipitates a soft-tissue membrane and resorption of the cancellous bone.A more compliant cement would substantially reduce the interfacial stresses and serve as a “pillow” between the prosthetic stem and the cancellous bone. We have developed a surgically-workable formulation of a reduced modulus acrylic bone cement — polybutylmethylmethacrylate (PBMMA) — to test this hypothesis. Materials property testing and in vivo implantation are discussed.

scholarly journals Effects of Alendronate Sodium Content on the Interface Strengths of Composite Acrylic Bone Cement

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
De-Ye Song ◽  
Xin-Zhan Mao ◽  
Mu-liang Ding ◽  
Jiang-Dong Ni
Keyword(s):  
Bone Cement ◽  
Sodium Content ◽  
Acrylic Bone Cement ◽  
Alendronate Sodium ◽  
Interface Shear ◽  
Cement Interface ◽  
Metal Interfaces ◽  
Peak Value

Objective. Aim to study how the content of alendronate affected shear strengths at bone-bone cement-metal interfaces.Methods. All samples were divided into 6 groups, G0–G5. On the 1st and 60th day after surgery, bone-bone cement interface shear strengths and bone densities were examined. Interface strengths of metal-bone cement specimens were studied before immersion and 4 weeks after immersion.Results. On the 60th day, bone-bone cement interface shear strengths and bone densities showed significant differences (P<0.05), and compared with G0, G2–G5values increased significantly (P<0.05), and the peak value was met in G3. Compared with the 1st day, on the 60th postoperative day both factors decreased significantly in G0and G1(P<0.05). Four weeks after immersion, with the increasing dose of alendronate, the shear strengths decreased gradually and in G5decreased significantly (P<0.05). Compared with before immersion, the metal-bone cement interface strengths decreased significantly 4 weeks after immersion (P<0.05).Conclusions. 50–500 mg alendronate in 50 g cement powders could prevent the decrease of shear strengths at bone-bone cement interfaces and had no effect on metal-bone cement interface strengths. While the addition dose was 100 mg, bone cement showed the best strengths.

Influence of revision arthroplasty on bone/cement interface shear strength

1987 ◽  
Vol 20 (8) ◽  
pp. 824
Author(s):  
J.E. Bechtold ◽  
Y. Dohmae ◽  
R.E. Sherman ◽  
R.B. Gustilo
Keyword(s):  
Shear Strength ◽  
Bone Cement ◽  
Revision Arthroplasty ◽  
Interface Shear Strength ◽  
Interface Shear ◽  
Cement Interface

Structural Weakening of Layered Acrylic Bone Cement

1982 ◽  
Vol &NA; (171) ◽  
pp. 94???96
Author(s):  
JAMES D. BLACK ◽  
A. SETH GREENWALD
Keyword(s):  
Bone Cement ◽  
Acrylic Bone Cement

Mechanical Performance and In Vivo Tests of an Acrylic Bone Cement Filled with Bioactive Sepia Officinalis Cuttlebone

2010 ◽  
Vol 21 (1) ◽  
pp. 113-125 ◽  
Author(s):  
S. García-Enriquez ◽  
H. E. R. Guadarrama ◽  
I. Reyes-González ◽  
E. Mendizábal ◽  
C. F. Jasso-Gastinel ◽  
...  
Keyword(s):  
Bone Cement ◽  
Mechanical Performance ◽  
Sepia Officinalis ◽  
Acrylic Bone Cement ◽  
In Vivo Tests

THE INFLUENCE OF TIBIAL PROSTHESIS DESIGN FEATURES ON STRESSES RELATED TO ASEPTIC LOOSENING AND STRESS SHIELDING

2011 ◽  
Vol 11 (01) ◽  
pp. 55-72 ◽  
Author(s):  
DESMOND Y. R. CHONG ◽  
ULRICH N. HANSEN ◽  
ANDREW A. AMIS
Keyword(s):  
Bone Resorption ◽  
Bone Cement ◽  
Aseptic Loosening ◽  
Cancellous Bone ◽  
Stress Shielding ◽  
Cement Mantle ◽  
Shear Stresses ◽  
Knee Prostheses ◽  
Design Features ◽  
Cement Interface

Aseptic loosening caused by mechanical factors is a recognized failure mode for tibial components of knee prostheses. This parametric study investigated the effects of prosthesis fixation design changes, which included the presence, length and diameter of a central stem, the use of fixation pegs beneath the tray, all-polyethylene versus metal-backed tray, prosthesis material stiffness, and cement mantle thickness. The cancellous bone compressive stresses and bone–cement interfacial shear stresses, plus the reduction of strain energy density in the epiphyseal cancellous bone, an indication of the likelihood of component loosening, and bone resorption secondary to stress shielding, were examined. Design features such as longer stems reduced bone and bone–cement interfacial stresses thus the risk of loosening is potentially minimized, but at the expense of an increased tendency for bone resorption. The conflicting trend suggested that bone quality and fixation stability have to be considered mutually for the optimization of prosthesis designs. By comparing the bone stresses and bone–cement shear stresses to reported fatigue strength, it was noted that fatigue of both the cancellous bone and bone–cement interface could be the driving factor for long-term aseptic loosening for metal-backed tibial trays.

A Crack Model of a Bone Cement Interface

1984 ◽  
Vol 106 (3) ◽  
pp. 235-243 ◽  
Author(s):  
J. P. Clech ◽  
L. M. Keer ◽  
J. L. Lewis
Keyword(s):  
Bone Cement ◽  
Cohesive Zone ◽  
Edge Crack ◽  
Crack Problem ◽  
Bimaterial Interface ◽  
Fracture Mechanisms ◽  
Homogeneous Material ◽  
Crack Model ◽  
Cement Interface ◽  
Crack Faces

This paper is concerned with the fracture mechanics of a bone-cement interface that includes a cohesive zone effect on the crack faces. This accounts for the experimentally observed strengthening mechanism due to the mechanical interlock between the crack faces. Edge crack models are developed where the cohesive zone is simulated by a continuous or a discrete distribution of linear or nonlinear springs. It is shown that the solution obtained by assuming a homogeneous material is fairly close to the exact solution for the bimaterial interface edge crack problem. On the basis of that approximation, the analysis is conducted for the problem of two interacting edge cracks, one at the interface, and the other one in the cement. The small crack that was observed to initiate in the cement, close to the bone-cement interface, does not affect much the mode I stress-intensity factor at the tip of the interface crack. However it may grow, leading to a catastrophic breakdown of the cement. The analysis and following discussion point out an interdependency between bone-cement interface strength and cement strength not previously appreciated. The suggested crack models provide a framework for quantifying the fracture mechanisms at the bone-cement interface.

Bone marrow modified acrylic bone cement for augmentation of osteoporotic cancellous bone

2011 ◽  
Vol 4 (8) ◽  
pp. 2081-2089 ◽  
Author(s):  
Daniel Arens ◽  
Stephan Rothstock ◽  
Markus Windolf ◽  
Andreas Boger
Keyword(s):  
Bone Marrow ◽  
Bone Cement ◽  
Cancellous Bone ◽  
Acrylic Bone Cement
Sign in / Sign up

Export Citation Format

Share Document