Letter to the editor concerning: Z.D. Yang et al., There may be a same mechanism of the left-right handedness and left-right convex curve pattern of adolescent idiopathic scoliosis, Med. Hypotheses (2010) Oct 29.

摘要

Dear Editor With interest we read the article by Yang ZD et al. The authors of the article hypothesized that "the location and gravity of heart and aorta may determine the trend of lateral flexion and axial rotation of the normal spine, which may be the reason of both left-right handedness and left-right convex curve pattern of AIS". We would like to comment on their hypothesis. In our previous studies, we systematically analyzed vertebral rotation of the normal, nonscoliotic spine and demonstrated the existence of a consistent pattern of physiological vertebral rotation, unrelated to the pathogenesis of AIS [1-3]. We postulated that, once the spine starts to decompensate into scoliosis, the direction of the developing curve is determined by this pre-existent rotational pattern.