Especially for use in additively manufactured orthoses we have modified a number of joint systems systems. In particular for the treatment of the lower extremities in particular, we have developed various ankle and knee and knee modules have been developed which, in addition to optimized leg lengths in a straight and cranked version. straight and offset versions. Depending on the conditions of the of the 3D model, the different variants can be variants can be specifically integrated, adjusted and fitted into the orthosis components, without the need for time-consuming machining of the processing of the splint shanks is necessary.