Pelvic radiography revealed bilateral SIJ osteoarthritis (Fig. 1).
Laboratory tests (including a complete blood count and blood
sedimentation rate) were normal.
programme based on the pelvic biomechanical characteristics. It included specific exercises of muscular strengthening (the transversely oriented
abdominal muscles and pelvic floor muscles) and muscular stretching (the psoas major muscle). We obtained an improvement of pain and
functional capacity in our patient.