We evaluated clinically and radiographycally 25 pelvic ring instability patients who met with the standards regulated by Tanaka.
Most of the patients complained of sharp pain on lumbosacral, inguinal, and thigh regions when they bent at the waist, carried heavy items, or woke up in the morning.
Objective analysis was rare without a pelvic stress test, but when pelvic stress was appraised, a grinding noise occurred in sacroiliac joint in some patients.
On the downward motion of the SLR test, some patient complained of pain somewhere in the pelvic region.
According to the JOA score, the patients tested received an average score of 20.75±4.25.
Ratio was significantly low between length × width of the symphysis and the distance from a third of symphysis pubis to a half of the 1st sacrum.
This suggested that pelvic ring instability tends to occur in a woman who had the pelvic structure that showed much smaller symphysis pubis and longer sagittal diameter of the pelvis.
