A historical perspective on pregnancy-related low back and/or pelvic girdle pain.

The growing interest in pregnancy-related low back and/or pelvic girdle pain has invoked research projects to this subject. Although it seems a modern syndrome, historical articles show that pregnancy-related pelvic girdle pain (PPGP) was already known centuries ago. The purpose of the present article is to provide a summary review of performed studies on pregnancy-related pelvic girdle pain. Remarkably, these studies show large differences in results with regard to, for example, incidence rates and relevant etiologic factors of pregnancy-related pelvic girdle pain. These differences can be explained by the use of different definitions and descriptions of pregnancy-related pelvic girdle pain between studies. In conclusion, it is necessary to search for an evidence-based overall definition of pregnancy-related pelvic girdle pain in order to provide more knowledge about incidence rates, etiologic factors and other related subjects.