Journal Article

A comparison of three methods for measuring thoracic kyphosis: implications for clinical studies

S. Goh, R. I. Price, P. J. Leedman and K. P. Singer

in Rheumatology

Volume 39, issue 3, pages 310-315
Published in print March 2000 | ISSN: 1462-0324
Published online March 2000 | e-ISSN: 1462-0332 | DOI: https://dx.doi.org/10.1093/rheumatology/39.3.310
A comparison of three methods for measuring thoracic kyphosis: implications for clinical studies

Show Summary Details

Preview

Objectives. To compare the Cobb technique for measuring kyphosis with an alternative Cobb method and a computer‐assisted curve assessment technique, and to examine the influence of vertebral body and disc shape on kyphosis.

Methods. Kyphosis measurements were derived from 93 lateral spinal radiographs or sagittal computed tomography images of cadaveric spines, using: (i) a computer‐assisted method for estimating radius of curvature; (ii) the traditional Cobb method; and (iii) an alternative Cobb method. Regression models were applied for agreement analyses, and to examine the relative contribution of vertebral body and disc shape on the extent of curvature.

Results and conclusions. Strong associations existed between curvature and angle data derived from the three methods, confirming the clinical utility of these techniques for the quantification of thoracic kyphosis. However, the traditional Cobb method tended to overestimate kyphosis in the presence of vertebral body end‐plate deformation. The degree of kyphosis was strongly reflective of the extent of deformity of the vertebral bodies, and to a lesser extent the shape of the thoracic discs.

Keywords: Thoracic spine; Kyphosis; Cobb angle; Computer‐assisted measurement; Vertebral body; Intervertebral disc; Spinal curvature.

Journal Article.  3624 words.  Illustrated.

Subjects: Rheumatology

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content. subscribe or login to access all content.