A Description of Three-Dimensional Shape of the Posterior Torso Comparing Those with and without Scoliosis

Scoliosis results in a 3D asymmetry of the spine and torso. It is not clear what the variability in 3D shape is in a non-scoliotic population, how much that is altered by scoliosis and what surgery does to that. This study is a 3D analysis of the shape of the torso in a cohort of non-scoliotic children that is then compared with a cohort of those with scoliosis both pre- and post-operatively. Procrustes analysis is used to examine the mean 3D shape. There is variability in shape in the non-scoliotic cohort. Scoliosis increases this asymmetry, particularly around the most prominent areas of the torso. Surgery alters the torso asymmetry but increases the difference in height between the right and the left with regard to the most prominent points on the torso. There is a degree of asymmetry seen in a non-scoliotic cohort of children. Scoliosis increases that asymmetry. Surgery alters the asymmetry but causes an increase in some of the 3D elements of the most prominent areas of the torso.

[1]  Derek Stephens,et al.  Surgeon Reliability in Rating Physical Deformity in Adolescent Idiopathic Scoliosis , 2007, Spine.

[2]  M. Głowacki,et al.  Assessment of spinal appearance in female patients with adolescent idiopathic scoliosis treated operatively , 2011, Medical science monitor : international medical journal of experimental and clinical research.

[3]  Ian L Dryden,et al.  Familial relationships of normal spine shape , 2008, Statistics in medicine.

[4]  Mutlu Hayran,et al.  Evaluation of shoulder balance in the normal adolescent population and its correlation with radiological parameters , 2008, European Spine Journal.

[5]  Fiona Berryman,et al.  The effects of scoliosis and subsequent surgery on the shape of the torso , 2017, Scoliosis and Spinal Disorders.

[6]  James O Sanders,et al.  The Spinal Appearance Questionnaire: Results of Reliability, Validity, and Responsiveness Testing in Patients With Idiopathic Scoliosis , 2007, Spine.

[7]  Fred L Bookstein,et al.  Functional morphology of the first cervical vertebra in humans and nonhuman primates. , 2006, Anatomical record. Part B, New anatomist.

[8]  John E Lonstein,et al.  How Much Correction Is Enough? , 2007, Spine.

[9]  Muhammad Naghman Choudhry,et al.  Adolescent Idiopathic Scoliosis , 2016, The open orthopaedics journal.

[10]  Martin Law,et al.  Cumulative radiation exposure and associated cancer risk estimates for scoliosis patients: Impact of repetitive full spine radiography. , 2016, European journal of radiology.

[11]  R. Betz,et al.  Adolescent Idiopathic Scoliosis: A New Classification to Determine Extent of Spinal Arthrodesis , 2001, The Journal of bone and joint surgery. American volume.

[12]  Fiona Berryman,et al.  A new system for measuring three-dimensional back shape in scoliosis , 2008, European Spine Journal.

[13]  Kanti V. Mardia,et al.  A geometrical derivation of the shape density , 1991, Advances in Applied Probability.

[14]  Stefano Negrini,et al.  TRACE (Trunk Aesthetic Clinical Evaluation), a routine clinical tool to evaluate aesthetics in scoliosis patients: development from the Aesthetic Index (AI) and repeatability , 2009, Scoliosis.

[15]  Fiona Berryman,et al.  What is the variability in shoulder, axillae and waist position in a group of adolescents? , 2017, Journal of anatomy.