Method for the estimation of a double hinge kinematic model for the trapeziometacarpal joint using MR imaging

P. Cerveri, E. De Momi, M. Marchente, G. Baud-Bovy, P. Scifo, R.M.L. Barros and G. Ferrigno

Computer Methods in Biomechanics and Biomedical Engineering, 2010, vol. 13, issue 3, 387-396

Abstract: In this paper, we propose a method to estimate the parameters of a double hinge model of the trapeziometacarpal joint (TMC) by MRI-based motion analysis. The model includes two non-orthogonal and non-intersecting rotation axes accounting for flexion–extension (F–E) and adduction–abduction (A–A). We evaluated the quality of the estimated model parameters in the prediction of the relative motion of the first metacarpal bone with respect to the trapezium. As a result, we obtained that: (a) the estimated location and orientation of the F–E and A–A axes were in agreement with previous in vitro studies, (b) the motion of the first metacarpal predicted by the 2 degrees of freedom (2DoF) model exhibits a maximum surface distance error in the range of about 2 mm and (c) four thumb postures at the boundary of the TMC range of motion are sufficient to provide a good estimation of the 2DoF TMC kinematic model and good reproducibility (∼1.7 mm) of the real thumb motion at TMC level.

Date: 2010
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DOI: 10.1080/10255840903260818

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