Simulation Nonlinear Biomechanics of the Forearm, using ANSYS

The forearm is the region of the upper extremity between the elbow and the wrist. It is formed by two bones, the ulna and radius, articulated to allow the rotation called prono-supination (pronation displays the dorsal side of the hand while supination shows the palm). The radius, one of the two bones that produce the bony contour of the forearm is a long bone, and consists of a proximal end or head, a shaft and a distal extremity, and is the most voluminous. It extends from the elbow to the wrist and is connected to the ulna through the interosseuos ligament or IOL. The head of the radius articulates with the distal end of the humerus and, together with the proximal end of the ulna, it forms part of the elbow joint. Isolated fractures of the radius are less frequent than the combined fracture of both radius and ulna. This investigation describes the behavior of the bones of the forearm using a computational model in ANSYS and includes the complete osseus structure while simplifying the cartilage . Surgical interventions of the fractured forearm is often unsuccessful at restoring the intact deformation patterns of the radius and ulna ., In the present study we propose the structural characterization of the radius and ulna using a 3D computational model, and compare this model to experimental data from the literature in order to use it in the future to evaluate an intramuscular prosthesis intended to improve the post-operative healing of patients with fractures of the forearm.

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