Faculty Collaboration Database

Relationship between Quantec measurement and Cobb angle in patients with idiopathic scoliosis. J Pediatr Orthop 2000;20(4):512-6

Date

07/27/2000

Pubmed ID

10912610

DOI

10.1097/00004694-200007000-00017

Scopus ID

2-s2.0-0033941644 (requires institutional sign-in at Scopus site)   53 Citations

Abstract

The Quantec Spinal Imaging System (QSIS) is a raster stereography used to measure three-dimensional trunk images. The Q angle, a coronal plane measurement generated by the Quantec Spinal Imaging System (QSIS), was compared with the Cobb angle in assessment of scoliosis curve magnitude. One hundred forty-nine patients with idiopathic scoliosis were evaluated using both the Quantec system and plane radiographs. The Cobb and Q angles demonstrated significant correlation in the thoracic region (r = 0.65, p < 0.05), lumbar region (r = 0.63, p < 0.05), and in the thoracolumbar region (r = 0.70, p < 0.05). The difference between the Q and Cobb angles was small when the Cobb angle was <21 degrees with less than 6 degrees of axial surface rotation, as measured by the QSIS method. For smaller curves with minimal rotation, there is close correlation between the Cobb angle and the Quantec angle.

Author List

Thometz JG, Lamdan R, Liu XC, Lyon R

Authors

Xue-Cheng Liu PhD Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Roger M. Lyon MD Adjunct Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
John G. Thometz MD Professor in the Orthopaedic Surgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adolescent
Analysis of Variance
Child
Child, Preschool
Diagnosis, Computer-Assisted
Female
Humans
Male
Observer Variation
Photography
Radiography
Scoliosis