Development of a 3-Dimensional Back Contour Imaging System for Monitoring Scoliosis Progression in Children. Spine Deform 2013 Mar;1(2):102-107
Date
03/01/2013Pubmed ID
27927425DOI
10.1016/j.jspd.2012.10.006Scopus ID
2-s2.0-84901816556 (requires institutional sign-in at Scopus site) 12 CitationsAbstract
STUDY DESIGN: Control study.
OBJECTIVES: To present a new surface topography system capable of taking 3-dimensional (3D) spine measurements, to establish baseline values for the measured parameters in a typically developing population, and to determine the intra-rater and inter-rater reproducibility of these parameters.
SUMMARY OF BACKGROUND DATA: Cumulative exposure to radiation from diagnostic radiographs increases patient risk for cancer development. There is a need for noninvasive and non-radiographic tools to accurately and reproducibly measure spine deformity and track scoliosis progression.
METHODS: We measured 10 typically developing subjects with the new Milwaukee Topography System, which is composed of 2 electromagnetic markers, an electronic processing unit, a handheld laser scanner, a software package, and a desktop computer. Two investigators separately scanned the same subjects multiple times, yielding a total of 4 scans per subject per investigator. We measured 17 3D back parameters in each scan. We performed a multivariate analysis of variances to test the hypothesis of no difference for all variables, measured intra-rater and inter-investigator reliability with intra-class correlation (ICC) coefficients, and calculated mean values.
RESULTS: There were highly reproducible ICC values between investigators for 6 parameters (ICC > 0.75), moderate ICC values for 8 parameters (0.75 > ICC > 0.4), and poor ICC values for 3 parameters (ICC < 0.4), all at p < .05. Intra-investigator ICCs were moderate to excellent for almost all parameters.
CONCLUSIONS: The Milwaukee Topography System can be used to monitor and measure 3D back contours in children. The 3D back parameters values measured in the typically developing population can be considered baseline values that can be compared with parameters measured in children with idiopathic scoliosis.
Author List
Liu XC, Tassone JC, Thometz JG, Paulsen LC, Lyon RM, Marquez-Barrientos C, Tarima S, Johnson PRAuthors
Xue-Cheng Liu PhD Professor in the Orthopaedic Surgery department at Medical College of WisconsinRoger M. Lyon MD Adjunct Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Sergey S. Tarima PhD Associate Professor in the Institute for Health and Equity department at Medical College of Wisconsin
J Channing Tassone MD 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
