[Internal Fixation of Sacro-iliac Joint in Unstable Fractures of the Pelvic Ring.]

Unstable fractures of the pelvic ring are always serious injuries posing problems from many aspects. Among the most serious are definitely unstable fractures of the pelvic ring with both vertical and rotational instability, i. e. type C fractures according to AO classification scheme. The recent therapeutic concept recommends in case of these fractures an active reconstruction on the dorsal SI complex which evidently improves the final perspective of patients with such a severe injury. The author presents his own clinical experience and literary data relating to the treatment of 11 patients who underwent reconstruction in the region of dorsal sacro-iliac complex due to type C unstable fracture. Clinical results achieved on the basis of the evaluation of a group of 11 patients are favourable and promising despite a significant complexity of the problems of unstable pelvic fractures. In 9 patients the anatomical result on radiograph was excellent, 9 patients regained full mobility after the proper physiotherapy, 10 patients resumed their work and 6 patients resumed even professional sports activity. In the conclusion the author states that in suitable, mainly young and fully stabilized patients the reconstruction surgery on the dorsal pelvic SI segment is fully justified which is documented both by the literary data and his own experience. Key words: unstable pelvic fractures.