[Mobility of the sacroiliac joint in vitro].

A photogrammetric method was used to measure the range of motion of the iliosacral joint in a two-dimensional in-vitro model. The results were compared with values reported in the literature. The influence of morphological and histopathological parameters was simultaneously studied on the same objects. This method which does not use radiation or metal implants leads to comparable values. Three-dimensional in-vivo studies using similar photogrammetric methods can achieve the required accuracy in a less invasive way.