A Flexion Vertebral Dysfunction
Purpose: Illustrates the mechanics of a somatic dysfunction if a facet, in this case the inferior facet of the top vertebra (the one closest to the camera) becomes restricted in flexion. The position is “normal” i.e. not palpable in flexion but becomes obvious, and easily palpable, in extension. Explains why the naming convention of the dysfunction seems to be the reverse of the findings, e.g. if you find it in extension it is a flexion dysfunction.