- A standardization lacking and the insufficient attention to quality criteria analysis when using therapeutic assessments lead to not loadable intervention results. Therefore these investigations must represent the basis for any uses of assessment. The goniometry is inevitable for the documentation of the mobility of joints. The kind of test procedures and their quality are however most contentious. The present study examined in a three-way blinded, randomized test-retest design, with for each n=10 test person and k=20 examiners, the intertester reliability (IER) and Intratester reliability (IAR) of the measuring procedures: “short and long goniometer”, “visual estimation”, “electrical goniometer” and “Vitronic Body Scanner with and without localization markers”. For the test procedures short, long and electrical goniometer weak IER and IAR (ICC 0,05). A diffuse international data situation makes a closing classification of the results more difficult and suggests the necessity for a high-quality meta-analysis to the topic.