As for this invention, in regard to the artificial arm, as for this artificial arm, the substance (1 101) with, the plural connected elements in order to install the artificial arm in the stump of the arm (2) and the artificial arm in order relatively it is crooked and to extend vis-a-vis these connected elements and to possess with one joint at least, the substance (1 101), resisting spring tension, it is maintained at neutral position.SolutionsAt least one spring element (3) the substance (1 101) it is provided to pertaining, this substance has promotive spring quality, gives the reaction force which is increased accompanied by increase of crookedness angle or extension angle.< Selective figure > Figure 3本発明は、義手に関し、この義手は、本体(1;101)と、義手を腕の断端に取り付けるための複数の連結要素(2)と、義手をこれらの連結要素に対し相対的に屈曲および伸展するための少なくとも1つの関節とを有し、本体(1;101)は、ばね力に抗して、中立位置に保たれている。【解決手段】少なくとも1つのばね要素(3)は、本体(1;101)に関連して設けられており、この本体は、累進的なばね特性を有し、屈曲角度または伸展角度の増大につれて、増大する反力を与える。【選択図】 図3