Results 271 to 280 of about 54,150 (309)
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Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 1998
Poly (methylmethacrylate) (PMMA) bone cement, used to fix implants into the bone, produces good surgical results if used correctly. However, prostheses do eventually become loose and the breakdown of the cement mantle is a factor in this failure. Limitations of PMMA cement, which lead to problems with the fixation of the implant, include its mechanical
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Poly (methylmethacrylate) (PMMA) bone cement, used to fix implants into the bone, produces good surgical results if used correctly. However, prostheses do eventually become loose and the breakdown of the cement mantle is a factor in this failure. Limitations of PMMA cement, which lead to problems with the fixation of the implant, include its mechanical
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Nondestructive evaluation of bone cement and bone cement/metal interface failure
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2009AbstractTo quantify the failure mechanisms related to the loosening of cemented hip joint replacements, novel techniques, capable of monitoring, nondestructively, the initiation and progression of failure duringin vitrofatigue tests, were employed. Fatigue testing of model cement and cement‐stem test pieces was monitored using acoustic emission (AE ...
Browne, M., Jeffers, J.R.T., Saffari, N.
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Cemented Fixation with Bone Grafts
Orthopedic Clinics of North America, 1993Loosening of the acetabular cup in cemented total hip arthroplasty is always accompanied by a loss of bone stock. Acetabular lesions can be reconstructed in several ways. Preoperative planning must be through, and specifically if graft procedures are considered, infection must be ruled out.
T J, Slooff, J W, Schimmel, P, Buma
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The effect of centrifuging bone cement
The Journal of Bone and Joint Surgery. British volume, 1989We have tested the porosity and fatigue life of five commonly used bone cements: Simplex P, LVC, Zimmer regular, CMW and Palacos R. Tests were conducted with and without centrifugation and with the monomer at room temperature and, except for LVC, at 0 degrees C. We found that the fatigue life of different specimens varied by a factor of nearly 100. It
J P, Davies +5 more
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The mechanical properties of bone cements
Journal of Medical Engineering & Technology, 1977The mechanical properties of a number of commercially available bone cements have been investigated. Tests were carried out on specimens in compression, in bending and in tension. Using the compression test as a standard, the effects of the following variables were studied: the addition of antibiotics, strain rate, environmental temperature, and age ...
A J, Lee, R S, Ling, S S, Vangala
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Principles of Bone Cement Mixing
British Journal of Perioperative Nursing (United Kingdom), 2001This is the first in a series of four consecutive articles on bone cement mixing. It aims to bring to the perioperative practitioners’ attention, all of the factors that will influence the quality and reproducibility of the bone cement they produce.
Rebecca Eveleigh, Guy Sellek
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Strength of the Cement-Bone Interface
Clinical Orthopaedics and Related Research, 1982The fixation of total joint components to bone using acrylic bone cement is by the penetration of the cement into the microstructure of cancellous bone to achieve a mechanical interlock. It has been shown that the method of cement application and the preparation of the cancellous surface significantly affects both the tensile and shear strengths of the
W R, Krause, W, Krug, J, Miller
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Rheology of Acrylic Bone Cements
Biomaterials, Medical Devices, and Artificial Organs, 1981The rheological properties of setting acrylic bone cements were examined with a rotational cone and plate viscometer. The cements were tested over two orders of magnitude of shear rate to determine the nature of any non-Newtonian flow behavior. All three cements behaved with moderate pseudoplasticity (i.e., shear thinning) during setting, suggesting ...
J L, Ferracane, E H, Greener
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Bone Cements and Cementing Technique
2001I Introduction.- II History of Bone Cements.- 2.1 Industrial Development of Bone Cement.- III Properties of Bone Cements.- 3.1 Handling Properties of PMMA Bone Cements.- 3.2 Mechanical Properties of Bone Cements.- 3.3 Mechanical Testing of Palamed.- IV Cementing Technique.- 4.1 Cementing Technique in Total Hip Replacement: Factors Influencing Survival ...
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