Is rasterstereography a valid noninvasive method for the screening of juvenile and adolescent idiopathic scoliosis?

Tito Bassani, Elena Stucovitz, Fabio Galbusera, Marco Brayda-Bruno

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: Aim of the study was to verify the accuracy of rasterstereography (RST), as radiation-free alternative to plain radiography (RAD) in the monitoring of spine deformity and scoliosis progression in juvenile and adolescent subjects with idiopathic scoliosis. Methods: 192 subjects underwent RST (by Formetric 4D device) and low-dose RAD (EOS Imaging, France) in the same session. A sub-group of 30 subjects, selected for conservative treatment with corrective bracing, was assessed at 6-months follow-up. The Cobb angles (CA) obtained by the 3D spine reconstruction from RAD were compared with those provided by RST. Thoracic kyphosis (TK) and lumbar lordosis (LL) were compared as well. Results: RST provided lower CA compared to RAD (15° vs. 33°, mean values). The average difference in measuring CA was 18°, and the correlation coefficient was 0.55. Comparable TK was observed, whereas LL resulted underestimated by RST compared to RAD (34° vs. 43°, average values). The within-subjects correlation, measuring the accuracy of RST in monitoring the scoliosis progression, was 0.3. Accuracy of RST in identifying increased or decreased CA was 67%. Sensitivity and specificity were 64% and 69%. Conclusions: RST demonstrated moderate accuracy in measuring the scoliosis degree and low accuracy in monitoring the curve progression. Accordingly, it cannot be considered as a valid alternative to radiographic evaluation. However, since demonstrated capable of revealing the presence of spine deformity, it could be in principle considered for the early screening in large adolescent populations, but after accounting for a cost-benefit analysis with respect to other traditional approaches. Graphical abstract: These slides can be retrieved under Electronic Supplementary Material.[Figure not available: see fulltext.]

Original languageEnglish
JournalEuropean Spine Journal
Volume28
Issue number3
DOIs
Publication statusAccepted/In press - Jan 1 2019

Fingerprint

Scoliosis
Radiography
Lordosis
Kyphosis
Spine
Thorax
France
Cost-Benefit Analysis
Radiation
Sensitivity and Specificity
Equipment and Supplies
Population

Keywords

  • Adolescents
  • Formetric 4D
  • Low-dose radiography
  • Rasterstereography
  • Scoliosis

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Is rasterstereography a valid noninvasive method for the screening of juvenile and adolescent idiopathic scoliosis? / Bassani, Tito; Stucovitz, Elena; Galbusera, Fabio; Brayda-Bruno, Marco.

In: European Spine Journal, Vol. 28, No. 3, 01.01.2019.

Research output: Contribution to journalArticle

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abstract = "Purpose: Aim of the study was to verify the accuracy of rasterstereography (RST), as radiation-free alternative to plain radiography (RAD) in the monitoring of spine deformity and scoliosis progression in juvenile and adolescent subjects with idiopathic scoliosis. Methods: 192 subjects underwent RST (by Formetric 4D device) and low-dose RAD (EOS Imaging, France) in the same session. A sub-group of 30 subjects, selected for conservative treatment with corrective bracing, was assessed at 6-months follow-up. The Cobb angles (CA) obtained by the 3D spine reconstruction from RAD were compared with those provided by RST. Thoracic kyphosis (TK) and lumbar lordosis (LL) were compared as well. Results: RST provided lower CA compared to RAD (15° vs. 33°, mean values). The average difference in measuring CA was 18°, and the correlation coefficient was 0.55. Comparable TK was observed, whereas LL resulted underestimated by RST compared to RAD (34° vs. 43°, average values). The within-subjects correlation, measuring the accuracy of RST in monitoring the scoliosis progression, was 0.3. Accuracy of RST in identifying increased or decreased CA was 67{\%}. Sensitivity and specificity were 64{\%} and 69{\%}. Conclusions: RST demonstrated moderate accuracy in measuring the scoliosis degree and low accuracy in monitoring the curve progression. Accordingly, it cannot be considered as a valid alternative to radiographic evaluation. However, since demonstrated capable of revealing the presence of spine deformity, it could be in principle considered for the early screening in large adolescent populations, but after accounting for a cost-benefit analysis with respect to other traditional approaches. Graphical abstract: These slides can be retrieved under Electronic Supplementary Material.[Figure not available: see fulltext.]",
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