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Mangone M.,Biomechanics and Movement Analysis Laboratory | Mangone M.,University of Rome La Sapienza | Raimondi P.,University of LAquila | Paoloni M.,Biomechanics and Movement Analysis Laboratory | And 9 more authors.
European Spine Journal | Year: 2013

Purpose: The aim of the present research is to evaluate the relationship between an X-ray-based method (i.e. The Raimondi method) and rasterstereography in the evaluation of vertebral rotation (VR) in a sample of adolescent idiopathic scoliosis (AIS) patients. Methods: A total of 25 patients (9 males; mean age 14 ± 3 years; mean height 160.7 ± 11.9 cm; mean weight 52.4 ± 10.7 kg) were considered for the present analysis. The mean Cobb angle was 30 ± 9. The evaluation of VR on radiographs was made using the Raimondi method regolo (Marrapese Editore - Demi S.r.1., Rome). Rasterstereography was performed by means of Formetric 4D® (Diers International GmbH, Schlangenbad, Germany). Correlations between rasterstereographic and radiographic measurement of VR were calculated, both for the whole sample and for thoracic and lumbar spinal segments considered separately, as well as for subgroups of patients with a Cobb angle <30 and ≥30 using Spearman's correlation coefficient by rank (r s). Results: When applied to the entire spine, measurement of VR by means of the two methods highlighted a significant correlation in the whole group (r = 0.52; p < 0.0001), as well as in the <30 Cobb (r = 0.47; p = 0.0001) and ≥30 Cobb (r = 0.42; p < 0.0001) subgroups. A significant correlation was found also when lumbar and thoracic VR were considered as separated groups (r = 0.30, p = 0.024 and r = 0.47, p = 0.002, respectively). Conclusions: Rasterstereographic evaluation of VR shows a good correlation with the Raimondi method, thereby confirming the possibility to use this non-invasive method for deformity assessment in AIS patients. © 2012 Springer-Verlag Berlin Heidelberg. Source

Mangone M.,Biomechanics and Movement Analysis Laboratory | Mangone M.,University of Rome La Sapienza | Scettri P.,Biomechanics and Movement Analysis Laboratory | Scettri P.,University of Rome La Sapienza | And 5 more authors.
Gait and Posture | Year: 2011

Pelvis-shoulder coordination while walking may, as a consequence of changes in spinal structure and posture, be susceptible to modifications in ankylosing spondylitis (AS) sufferers. We designed an explanatory, cross-sectional trial to assess whether Pelvis-shoulder coordination during walking in AS patients differs from that in healthy subjects. Seventeen AS patients and 10 healthy sex- and age-matched subjects were enrolled. Gait analysis was performed in order to define the time-distance and kinematic characteristics during walking. Pelvis-shoulder coordination was calculated in terms of the continuous estimate of relative phase (CRP) between the pelvis and shoulder girdles on the transversal plane for the whole gait cycle (GC), as well as for its sub-phases. No differences were found between patients and controls as regards mean velocity, cadence and stride length. When kinematic variables were compared with those of healthy controls, AS patients displayed greater pelvic tilt and increased hip flexion in both the loading response (LR) and pre-swing (PSw) sub-phases. The CRP mean values significantly differed between groups. Moreover, patients displayed a peculiar CRP pattern, chiefly in the LR, terminal stance and PSw sub-phases. This visual consideration was confirmed by the analysis of the CRP mean values in these sub-phases of the GC. Our results suggest that the walking pattern of AS patients is characterized by altered Pelvis-shoulder coordination during the GC. © 2011 Elsevier B.V. Source

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