The global end-ranges of neck flexion and extension do not represent the maximum rotational ranges of the cervical intervertebral joints in healthy adults - an observational study

ConclusionThis is the first study to categorise joints by type of motion. It cannot be assumed that end-range is a demonstration of a joint ’s maximum motion, as type S constituted approximately half of the joints analysed in this study.
Source: Chiropractic and Manual Therapies - Category: Complementary Medicine Source Type: research