volume 40, issue 8, Pe479-e486 2012
DOI: 10.1016/j.jcms.2012.03.009
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Raymond C.W. Wong, Henk Tideman, Matthias A.W. Merkx, John Jansen, Suk Meng Goh

Abstract: Good bony contact seems to be essential at the lower border for long-term survival of the reconstruction. Small gaps increase the bending forces and thus shear stresses at the stem. The new design of the modular endoprosthesis is prone to stress concentrations at the superior surface of the stems. This is accentuated by the sharp screw threads of the stems. The loosening of the module connection seemed to have been stopped with the dove-tailed design.