This is a Von Mises stress plot (nondiabetic case) of the forefoot finite element model after applying pressure loads. The figure shows a front view, which is a cross section of the forefoot around the metatarsal head joint. The maximum Von Mises stress was approximately 0.6 megapascals and was located on the region between the second and third metatarsals, while the stress on the rest of the forefoot was less than 0.15 megapascals. These results are consistent with the pressure data obtained during the pressure load measurements. Also shown is the stress distribution inside the foot, between the different tissue layers (skin, fat, muscle, and bones). The largest difference in stress across elements can be seen at the skin-fat interface below the third metatarsal head (approximately 0.5 megapascals on the skin side and 0.1 megapascals on the fat side).
Last updated: September 3, 2004 11:01 AM
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