... of1 4 (82 %) female and 3 (18 %) male subjectsranging in age from 26 to 59, with a mean age of 42.4 (SD9. 7). The duration of symptoms ranged from 1.5 to 18years, with a mean duration of 8.7 years ... increased by an average of 49% (p =0.00 0) in flexion and 44% (p = 0.00 1) in extension, 47% (p = 0.00 0) and 28% (p < 0.01 6) in right and left lateral flexion, and a 27% (p = 0.00 2) and 45% (p ... Health and Science University School of Medicine, Portland, Oregon, USA, 2Institute of Forensic Medicine, Faculty of Health Sciences, University of Aarhus, Aarhus, Denmark, 3University of Nebraska...