BIOMECHANICS OF HAND

Abstract eng:
The top of article is mechanic model of hand power grip. The algorithm of calculation of tendon and finger joint forces and finger stress state is presented. The results can be used as loading for finger implants. The mechanic model consists of tendons and stiff finger bone elements. The bending moments at joints and the friction of tendons at vaginas are omitted. The tendon influence is searched as a rope in pulley system. The power grip of object is solved in two forms: a grip of some object, for example pliers and a grip of a bar with circle cross-section, for example if a man hangs on a horizontal cross bar. The algorithm was interpreted on a computer. The program can be used for pathologic cases too if some fingers don’t operate or have pathologic form.

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