Wooley J, Kemper, C
Journal of Orthopaedic Medicine 1998, 20, 17-20
Irvine and Chico, California
The coccyx is considered to be a vestigial structure by most medical and chiropractic physicians and therefore is not considered to have a significant range of motion or dynamic function. We postulate that optimal coccygeal range of motion is greater than 50 degrees. This study demonstrates that restricted coccygeal range of motion is found in patients with reduced low back flexion and associated low back pain. Changes in low back pain and trunk flexibility follow coccygeal manipulation.