caa a22 4500 445834560 CHVBK 20180317145326.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00586-011-1924-1 doi (NATIONALLICENCE)springer-10.1007/s00586-011-1924-1 Sagittal parameters of the spine: biomechanical approach [Elektronische Daten] [Pierre Roussouly, João Pinheiro-Franco] According to the anatomical segmentation, spine curves are the sacral kyphosis (sacrum), lumbar lordosis (L1 to L5), thoracic kyphosis (T1 to T12) and cervical lordosis (C1 to C7). From the morphological point of view the vertebrae of a curve are not identical: from cranial to caudal and vice versa there is a progressive anatomical modification. Both curves of the thoraco-lumbar spine may be divided at the Inflexion Point where lordosis turns into kyphosis. A geometrical construct of each curve by two tangent arcs of circle allows understanding the reciprocal changes between both curves. Lumbar Lordosis is mainly dependent on SS orientation, and the top of thoracic curve on C7 is very stable over the sacrum. Thoracic curve is dependent on lumbar lordosis orientation and C7 positioning. On a reverse effect, structural changing of thoracic kyphosis may affect the shape of the lumbar lordosis and the orientation of the pelvis. Springer-Verlag, 2011 Sagittal balance nationallicence Spine curves nationallicence Lordosis nationallicence Thoracic kyphosis nationallicence Geometrical analysis nationallicence Roussouly Pierre Chirurgie de la colonne vertébrale, Croix Rouge Française, CMCR des Massues, 92 Rue Edmond Locard, 69322, Lyon Cedex 05, France aut Pinheiro-Franco João Department of Neurological Surgery, Samaritano Hospital, São Paulo, Brazil aut European Spine Journal Springer-Verlag 20(2011-09-01), 578-585 0940-6719 20<578 2011 20 586 https://doi.org/10.1007/s00586-011-1924-1 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1924-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Roussouly Pierre Chirurgie de la colonne vertébrale, Croix Rouge Française, CMCR des Massues, 92 Rue Edmond Locard, 69322, Lyon Cedex 05, France aut NATIONALLICENCE 700 1- Pinheiro-Franco João Department of Neurological Surgery, Samaritano Hospital, São Paulo, Brazil aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20(2011-09-01), 578-585 0940-6719 20<578 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer