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Biomechanics of bone-fracture fixation - Guest - 16-02-2006
<b><!--sizeo:4--><!--/sizeo-->Biomechanics of bone-fracture fixation by stiffness-graded plates in comparison with stainless-steel plates<!--sizec--><!--/sizec--></b>
<b>VK Ganesh* 1 , K Ramakrishna* 2 and Dhanjoo N Ghista* 3</b>
1 iDAF Systems; Block 2019, # 03-252; Bukit Batok Street 23; 659524, Singapore
2 School of Mechanical and Aerospace Engineering; Nanyang Technological University; 50 Nanyang Avenue; 639798, Singapore
3 Division of Bioengineering; Nanyang Technological University; 50 Nanyang Avenue; 639798, Singapore
BioMedical Engineering OnLine 2005, 4:46 doi:10.1186/1475-925X-4-46
<b>Background</b>
In the internal fixation of fractured bone by means of bone-plates fastened to the bone on its tensile surface, an on-going concern has been the excessive stress-shielding of the bone by the excessively-stiff stainless-steel plate. The compressive stress-shielding at the fracture-interface immediately after fracture-fixation delays callus formation and bone healing. Likewise, the tensile stress-shielding of the layer of the bone underneath the plate can cause osteoporosis and decrease in tensile strength of this layer.