Embedding Adaptive Engineering Mechanisms into a Coupled Tendon Transfer Surgery for High Median-Ulnar Nerve Palsy: A Simulation Study with OpenSim Public

http://ir.library.oregonstate.edu/concern/honors_college_theses/1r66j299t

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  • The improvement of coupled tendon transfer surgeries through the insertion of an adaptive engineering mechanism was explored using biomechanical simulations performed in OpenSim. Tendon transfer surgeries are commonly performed on the upper extremity to restore hand function. A conventional 4-tailed tendon transfer procedure model and a modified 4-tailed procedure model with inserted adaptive see-saw mechanism were created for this study. Forward dynamics simulations were used to predict surgical outcomes. Using the inserted device in a tendon transfer surgery was found to improve overall finger flexion ability, grasp force magnitude, and direction of grasp force when compared with performance after the conventional surgery. The device was also able to mitigate the impact of minor surgical error in tendon length and moment arm variation on finger flexion capability. Simulation results conclusively indicate that insertion of an adaptive engineering mechanism into the modified Brand procedure is expected to improve surgical outcomes and post-surgical quality of life.
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