title: Detection of progressive idiopathic scoliosis during growth using back surface topography: a prospective study of 100 patients.
abstract: The progression of adolescent idiopathic scoliosis is typically monitored via regular radiographic follow-up. The Cobb angle (as measured on whole-spine radiographs) is considered as the gold standard in scoliosis monitoring.
  
  
  OBJECTIVE
  To determine the sensitivity and specificity of back surface topography parameters, with a view to detecting changes in the Cobb angle.
  
  
  METHODS
  One hundred patients (mean age: 13.3) with Cobb angles greater than 10 degrees were included. Topographic parameters were measured in a standard position and in a position with hunched shoulders. Gibbosities and spinal curvatures were evaluated.
  
  
  RESULTS
  An increase of more than 2 degrees in any one gibbosity or in the sum of the gibbosities (in either of the two examination positions) enabled the detection of a five-degree increase in the Cobb angle with a sensitivity of 86% and a specificity of 50%.
  
  
  CONCLUSIONS
  If the present results are confirmed by other studies, analysis with back surface topography parameters may reduce the number of X-ray examinations required to detect increases in the Cobb angle.
authors.affiliation: Centre hospitalier privé Saint-Grégoire, 35768 Saint-Grégoire, France.
authors.forename: G
authors.initials: G
authors.lastname: De Korvin
authors.affiliation: Département de mécanique, laboratoire de biomécanique et mécanique des chocs, université Lyon 1/IFSTTAR, LBMC, UMR_T 9406, bâtiment Omega, 43, boulevard du 11 novembre, 69622 Villeurbanne cedex, France.
authors.forename: T
authors.initials: T
authors.lastname: Randriaminahisoa
authors.affiliation: Unité de médecine orthopédique, service de MPR, hôpital Tastet-Girard, CHU de Bordeaux, place Amélie-Raba-Léon, 33076 Bordeaux cedex, France.
authors.forename: E
authors.initials: E
authors.lastname: Cugy
authors.affiliation: Département de mécanique, laboratoire de biomécanique et mécanique des chocs, université Lyon 1/IFSTTAR, LBMC, UMR_T 9406, bâtiment Omega, 43, boulevard du 11 novembre, 69622 Villeurbanne cedex, France.
authors.forename: L
authors.initials: L
authors.lastname: Cheze
authors.affiliation: Unité de médecine orthopédique, service de MPR, hôpital Tastet-Girard, CHU de Bordeaux, place Amélie-Raba-Léon, 33076 Bordeaux cedex, France. Electronic address: mathieu.de-seze@chu-bordeaux.fr.
authors.forename: M
authors.initials: M
authors.lastname: de Sèze
mesh_terms: D000293:Adolescent; D001415:Back / Q000000981:diagnostic imaging / Q000473:pathology*; D002648:Child; D018450:Disease Progression; D005188:False Negative Reactions; D006801:Humans; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011859:Radiography; D012600:Scoliosis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D055815:Young Adult
keywords: Rachis; Radioprotection; Scoliose; Scoliosis; Spine; Surface topography; Topographie de surface