News Column

Studies from M. Alvarez-Vera et al Add New Findings in the Area of Materials Research

February 11, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- A new study on Materials Research is now available. According to news reporting from Bologna, Italy, by VerticalNews journalists, research stated, "A new hip resurfacing prosthesis design was assessed and compared in terms of kinematics and contact stress regarding to the conventional hip resurfacing prosthesis. For this purpose both designs were virtually implanted in a cadaveric computer-aided design model."

The news correspondents obtained a quote from the research, "Commercial software was employed to simulate the movements of flexion, abduction and internal rotation at 90 degrees of flexion to determinate the impingement between femoral neck and acetabular cup. On the other hand, the edge load effect as consequence of different acetabular component inclinations and micro-separations were analyzed by finite element analysis for both designs. In addition, this effect was validated in the hip joint simulator FIME II. The results of the new design exhibited a significant motion increment before impingement of 12.8 degrees +/- 1.3 degrees for flexion, 13.3 degrees +/- 3.1 degrees for extension, 7.8 degrees +/- 1.9 degrees for abduction and 13.1 degrees +/- 3.2 degrees for internal rotation."

According to the news reporters, the research concluded: "Moreover, the new design showed a reduction of the contact stress and stripe wear during the running-in due to the micro-separation effect."

For more information on this research see: A novel total hip resurfacing design with improved range of motion and edge-load contact stress. Materials & Design, 2014;55():690-698. Materials & Design can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Materials & Design -

Our news journalists report that additional information may be obtained by contacting M. Alvarez-Vera, Ist Ortoped Rizzoli, Lab Tecnol Med, Bologna, Italy. Additional authors for this research include G.R. Contreras-Hernandez, S. Affatato and M.A.L. Hernandez-Rodriguez.

Keywords for this news article include: Italy, Europe, Bologna, Materials Research

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Source: Journal of Technology

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