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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Med Eng Phys. 2017 Nov 6;50:43–49. doi: 10.1016/j.medengphy.2017.09.002

Figure 1.

Figure 1

Overview of the method: Clinical CT of 50 healthy adult men and women in seven positions (including neutral, unloaded pinch, unloaded grasp, unloaded jar twist, loaded pinch, loaded grasp, and loaded jar twist) were segmented into point clouds. Neutral point clouds were used as a training set to create a statistical shape model (SSM) of the bones. The SSM was used to create parametric finite element (FE) models of the trapezium and first metacarpal bones and were initialized in the unloaded state. Force-driven FE simulations were performed to simulate the loaded posture. The force vector, F, was optimized to minimize the error between the simulated postures and the actual loaded posture from CT. The results were analysed statistically.