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Invariance of head-pelvis alignment and compensatory mechanisms for asymptomatic adults older than 49 years

Type
Articles dans des revues avec comité de lecture
Author
AMABILE, Célia
484605 LBM/institute de Biomécanique humaine Georges Charpak
LE HUEC, Jean-Charles
414845 Université de Bordeaux Ségalen [Bordeaux 2]
SKALLI, Wafa
484605 LBM/institute de Biomécanique humaine Georges Charpak

URI
http://hdl.handle.net/10985/17976
DOI
10.1007/s00586-016-4830-8
Date
2018
Journal
European Spine Journal

Abstract

Purpose The aim was to quantify the postural alignment of asymptomatic elderly, in comparison to a reference population, searching for possible invariants and compensatory mechanisms. Methods 41 volunteers (49–76 years old) underwent bi-planar X-rays with 3D reconstructions of the spine and pelvis. Alignment parameters were compared with those of a reference group of asymptomatic subjects younger than 40 years old, with a particular focus on center of acoustic meati (CAM) and odontoid (OD) with regard to hip axis (HA). Possible markers of compensation were also investigated. Results No significant difference among groups appeared for CAM-HA and OD-HA parameters. Twenty four percent of elders had an abnormally high SVA value and twenty seven percent had an abnormal global spine inclination. Increased pelvic tilt and cervical lordosis allowed maintaining the head above the pelvis. Conclusions CAM-HA and OD-HA appeared quasi-invariant even in asymptomatic elderly. Some subjects exhibited alteration of spine alignment, compensated at the pelvis and cervical regions.

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