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Three-dimensional reconstructions of Lenke 1A curves
Annals of Physical and Rehabilitation Medicine 59S (2016) e91–e97
Available online at
ScienceDirect www.sciencedirect.com
Spine
Oral communications CO0263
Three-dimensional reconstructions of Lenke 1A curves Jean-Claude Bernard 1,∗ , Eric Berthonnaud 2 , Nuria Rodriguez-Martinez 1 , Julie Deceuninck 1 , Emmanuelle Chaleat-Valayer 1 1 Croix-Rouge franc¸aise, rééducation pédiatrique enfants-adolescents des massues, Lyon, France 2 Hôpital Nord-Ouest, Villefranche-sur-Saône, France ∗ Corresponding author. E-mail address: [email protected] (J.-C. Bernard) Objective Three-dimensional imaging was performed to identify if Lenke 1A curves could be reclassified in subgroups to improved orthopedic or surgical treatment of adolescent idiopathic scoliosis. It seems that multitude of 3D reconstructions can exist in Lenke 1A curves. With his classification Lenke introduces new parameters in radiographic analysis of idiopathic scoliosis like frontal lumbar and thoracic sagittal modifiers. Scoliosis is defined as a three dimensional deformity in frontal, sagittal and horizontal plane. The spine is considered as an heterogeneous beam, and is modeled as a deformable wire along which vertebrae are beads rotating about the wire. Each vertebra can rotate about the 3D spinal curve. 3D spinal curve is compound of plane regions connected together by zones of transition. The 3D spinal curve is uniquely flexed along the plane regions. The objective of this study was to identify if all Lenke 1A curves could have the same 3D representation. Material/patients and methods Biplanar radiographic examination with successive exposures (frontal and sagittal) or with EOS system, coupled with photogrammetric reconstructions, may be used for reconstructing the 3D spinal curve. In definitive, we obtain the 3D reconstruction and the regional plans with their parameters. To become familiar with the Lenke classification, we classified 223 antero-posterior radiographs and profile then compared our results: 4 independent readers (2 familiar with scoliosis and 2 no). Patient’s characteristics, measurements (Cobb angles in the plan region, cervical, thoracic and lumbar sagittal curves, pelvic parameters and election planes characteristics) were recorded. Results A total of 63 consecutive Lenke 1A patients were included (mean age of 11.3 years for 47 girls and 16 boys). Thoracic Cobb angle was between 14◦ and 70◦ (mean 36.5◦ ). Pelvic incidence was between 26◦ and 78◦ (mean 52.8◦ ) and pelvic tilt between −6◦ and 29◦ (mean 9.8◦ ). In most of cases, we find 4 torsion planes instead 1877-0657/
in 43% instead of 3 in asymptomatic subjects and the rotation of these was very disparate. Discussion - conclusion Lenke 1A curves could be represented in a multitude of representations. The 3D representations of idiopathic scoliosis have to enter in our daily practice for the analysis and the orthopedic or chirurgical treatment of this one. Keywords Three dimensional imaging; Adolescent; Thoracic scoliosis Disclosure of interest The authors declare that they have no competing interest. http://dx.doi.org/10.1016/j.rehab.2016.07.204 CO0264
Monitoring of progressive idiopathic scoliosis by BIOMOD TM-L, back surface topography device, during plaster treatment and progressive felting
Victor Bobin ∗ , Julien Durigneux , Juliette Palussiere , Pierre Beranger , Henry-Franc¸ois Parent , Mickaël Dinomais CHU d’Angers, MPR SSR Capucins, Angers, France ∗ Corresponding author. E-mail address: [email protected] (V. Bobin) Objective No irradiant techniques of analysis of deformations of the spine, by surface topography, have been developed with a view to detecting scoliosis and monitoring its progression during growth. The objective of our work was to study the evolution of back surface topography parameters by BIOMOD TM-L in adolescents with idiopathic scoliosis treated with plaster and progressive felting. Material/patients and methods Children with severe idiopathic scoliosis, for which a plaster more felting treatment before a brace was indicated, and has received a topographic and radiological acquisition before and after the realization of plaster, and up to one year after the start of treatment, were included. The main endpoint was the change of thoraco-lumbar variable in the transverse plane measured by BIOMOD TM-L at T0 (before felting), T1 (after felting) and T2 (one year before the beginning of treatment). Results Twenty-one children (mean age: 13) were included. There is a significant decrease of the thoraco-lumbar gibbosity measure by BIOMOD TM-L in adolescent with scoliosis treated with plaster more felting, at T0, T1 and T2 (P = 0.0007). The medians of these gibbosity were of 8,0◦ (IC 95% [6,15–8,73]), 4,0◦ (IC 95% [3,37–5,88], rank sum diff = 20) (P adjusted = 0.0008), and 4,0◦ (IC
Available online at
ScienceDirect www.sciencedirect.com
Spine
Oral communications CO0263
Three-dimensional reconstructions of Lenke 1A curves Jean-Claude Bernard 1,∗ , Eric Berthonnaud 2 , Nuria Rodriguez-Martinez 1 , Julie Deceuninck 1 , Emmanuelle Chaleat-Valayer 1 1 Croix-Rouge franc¸aise, rééducation pédiatrique enfants-adolescents des massues, Lyon, France 2 Hôpital Nord-Ouest, Villefranche-sur-Saône, France ∗ Corresponding author. E-mail address: [email protected] (J.-C. Bernard) Objective Three-dimensional imaging was performed to identify if Lenke 1A curves could be reclassified in subgroups to improved orthopedic or surgical treatment of adolescent idiopathic scoliosis. It seems that multitude of 3D reconstructions can exist in Lenke 1A curves. With his classification Lenke introduces new parameters in radiographic analysis of idiopathic scoliosis like frontal lumbar and thoracic sagittal modifiers. Scoliosis is defined as a three dimensional deformity in frontal, sagittal and horizontal plane. The spine is considered as an heterogeneous beam, and is modeled as a deformable wire along which vertebrae are beads rotating about the wire. Each vertebra can rotate about the 3D spinal curve. 3D spinal curve is compound of plane regions connected together by zones of transition. The 3D spinal curve is uniquely flexed along the plane regions. The objective of this study was to identify if all Lenke 1A curves could have the same 3D representation. Material/patients and methods Biplanar radiographic examination with successive exposures (frontal and sagittal) or with EOS system, coupled with photogrammetric reconstructions, may be used for reconstructing the 3D spinal curve. In definitive, we obtain the 3D reconstruction and the regional plans with their parameters. To become familiar with the Lenke classification, we classified 223 antero-posterior radiographs and profile then compared our results: 4 independent readers (2 familiar with scoliosis and 2 no). Patient’s characteristics, measurements (Cobb angles in the plan region, cervical, thoracic and lumbar sagittal curves, pelvic parameters and election planes characteristics) were recorded. Results A total of 63 consecutive Lenke 1A patients were included (mean age of 11.3 years for 47 girls and 16 boys). Thoracic Cobb angle was between 14◦ and 70◦ (mean 36.5◦ ). Pelvic incidence was between 26◦ and 78◦ (mean 52.8◦ ) and pelvic tilt between −6◦ and 29◦ (mean 9.8◦ ). In most of cases, we find 4 torsion planes instead 1877-0657/
in 43% instead of 3 in asymptomatic subjects and the rotation of these was very disparate. Discussion - conclusion Lenke 1A curves could be represented in a multitude of representations. The 3D representations of idiopathic scoliosis have to enter in our daily practice for the analysis and the orthopedic or chirurgical treatment of this one. Keywords Three dimensional imaging; Adolescent; Thoracic scoliosis Disclosure of interest The authors declare that they have no competing interest. http://dx.doi.org/10.1016/j.rehab.2016.07.204 CO0264
Monitoring of progressive idiopathic scoliosis by BIOMOD TM-L, back surface topography device, during plaster treatment and progressive felting
Victor Bobin ∗ , Julien Durigneux , Juliette Palussiere , Pierre Beranger , Henry-Franc¸ois Parent , Mickaël Dinomais CHU d’Angers, MPR SSR Capucins, Angers, France ∗ Corresponding author. E-mail address: [email protected] (V. Bobin) Objective No irradiant techniques of analysis of deformations of the spine, by surface topography, have been developed with a view to detecting scoliosis and monitoring its progression during growth. The objective of our work was to study the evolution of back surface topography parameters by BIOMOD TM-L in adolescents with idiopathic scoliosis treated with plaster and progressive felting. Material/patients and methods Children with severe idiopathic scoliosis, for which a plaster more felting treatment before a brace was indicated, and has received a topographic and radiological acquisition before and after the realization of plaster, and up to one year after the start of treatment, were included. The main endpoint was the change of thoraco-lumbar variable in the transverse plane measured by BIOMOD TM-L at T0 (before felting), T1 (after felting) and T2 (one year before the beginning of treatment). Results Twenty-one children (mean age: 13) were included. There is a significant decrease of the thoraco-lumbar gibbosity measure by BIOMOD TM-L in adolescent with scoliosis treated with plaster more felting, at T0, T1 and T2 (P = 0.0007). The medians of these gibbosity were of 8,0◦ (IC 95% [6,15–8,73]), 4,0◦ (IC 95% [3,37–5,88], rank sum diff = 20) (P adjusted = 0.0008), and 4,0◦ (IC