caa a22 4500 445834625 CHVBK 20180317145326.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00586-011-1936-x doi (NATIONALLICENCE)springer-10.1007/s00586-011-1936-x Global analysis of sagittal spinal alignment in major deformities: correlation between lack of lumbar lordosis and flexion of the knee [Elektronische Daten] [Ibrahim Obeid, Olivier Hauger, Stéphane Aunoble, Anouar Bourghli, Nicolas Pellet, Jean-Marc Vital] Introduction: It has become well recognised that sagittal balance of the spine is the result of an interaction between the spine and the pelvis. Knee flexion is considered to be the last compensatory mechanism in case of sagittal imbalance, but only few studies have insisted on the relationship between spino-pelvic parameters and lower extremity parameters. Correlation between the lack of lumbar lordosis and knee flexion has not yet been established. Materials and methods : A retrospective study was carried out on 28 patients with major spinal deformities. The EOS system was used to measure spinal and pelvic parameters and the knee flexion angle; the lack of lumbar lordosis was calculated after prediction of lumbar lordosis with two different formulas. Correlation analysis between the different measured parameters was performed. Results: Lumbar lordosis correlated with sacral slope (r = −0.71) and moderately with knee flexion angle (r = 0.42). Pelvic tilt correlated moderately with knee flexion angle (r = 0.55). Lack of lumbar lordosis correlated best with knee flexion angle (r = 0.72 and r = 0.63 using the two formulas, respectively). Conclusion: Knee flexion as a compensatory mechanism to sagittal imbalance was well correlated to the lack of lordosis and, depending on the importance of the former parameter, the best procedure to correct sagittal imbalance could be chosen. Springer-Verlag, 2011 Sagittal imbalance nationallicence Knee flexion nationallicence Osteotomy nationallicence EOS nationallicence Lumbar lordosis nationallicence Obeid Ibrahim Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut Hauger Olivier Unité radiologie ostéo-articulaire, Université Bordeaux CHU, 33076, Bordeaux, France aut Aunoble Stéphane Unité chirurgie rachis 2, Université Bordeaux CHU, 33076, Bordeaux, France aut Bourghli Anouar Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut Pellet Nicolas Unité chirurgie rachis 2, Université Bordeaux CHU, 33076, Bordeaux, France aut Vital Jean-Marc Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut European Spine Journal Springer-Verlag 20(2011-09-01), 681-685 0940-6719 20<681 2011 20 586 https://doi.org/10.1007/s00586-011-1936-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1936-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Obeid Ibrahim Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 700 1- Hauger Olivier Unité radiologie ostéo-articulaire, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 700 1- Aunoble Stéphane Unité chirurgie rachis 2, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 700 1- Bourghli Anouar Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 700 1- Pellet Nicolas Unité chirurgie rachis 2, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 700 1- Vital Jean-Marc Unité chirurgie rachis 1, Université Bordeaux CHU, 33076, Bordeaux, France aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20(2011-09-01), 681-685 0940-6719 20<681 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer