What’s This Research About?
Sacroiliac joint instability is one of the possible causes of low back pain and pelvic girdle pain. However, it is difficult to determine true movement of the SI joint. This study measures movement in the SI joint using Radiostereometric analysis (RSA is considered a highly precise and accurate way to measure joint movement) in patients with severe pelvic girdle pain during the single leg stance test developed by Chamberlain in 1930. Comparisons of SI joint movement are made between the standing and hanging leg.