Mapping Vertebral Levels during Ultrasound Assessment of Spinal Deformities in Girls with Adolescent Idiopathic Scoliosis — Construction of a Normal Reference Table
Refereed conference paper presented and published in conference proceedings


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AbstractIntroduction: Ultrasound was reported to be valid and reliable for measurement of Cobb’s angle in adolescent idiopathic scoliosis (AIS). To patch up for its insufficiency in determining the vertebral levels, we aimed to develop a reference table on linear dimension along the vertebral column with which vertebral levels could be determined.

Methods: This was a cross-sectional study on 293 female AIS patients aged 10-27 years with Cobb’s angle ranging from 11° to 39°. EOS frontal radiography of the whole spine was taken. Centroid of the vertebral body and intervertebral disc was determined from T1 to L5. The ‘fractional distance (FDi)’ for the ith vertebra, was defined as ([distance of T1 to the ith vertebra] / [entire length from T1-L5]) x 100%.

Results: Intra-observer reliability showed an intraclass correlation coefficient of 0.963. Also, 99% confidence intervals for FDi in % were tabulated as exemplified by T2 (4.41-4.50), up to L4 (92.50-92.69). Corresponding measurements for intervertebral discs were similarly tabulated as exemplified by T1-T2 (2.07-2.15) up to L4-L5 (96.07-96.21). Notably, these 99% confidence intervals on FDi for adjacent vertebrae and intervertebral discs did not overlap for all measurements.

Discussion and Conclusion: A reference table on linear dimension along the vertebral column for female AIS subjects was constructed. The fact that the 99% confidence intervals for adjacent vertebrae and intervertebral disc do not overlap supports the feasibility of using the reference table with which ultrasound evaluation of scoliosis can be conducted not only to determine the Cobb’s angle but also the levels of the end and apical vertebra.
All Author(s) ListI Tran, LLN Wong, YP Zheng, BKW Ng, JCY Cheng, TP Lam
Name of ConferenceHong Kong Orthopaedic Association 37th Annual Congress 2017
Start Date of Conference04/11/2017
End Date of Conference05/11/2017
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Proceedings TitleThe Proceedings of the Hong Kong Orthopaedic Association 37th Annual Congress 2017
Year2017
Month11
Place of PublicationHong Kong
Pages30 - 30
LanguagesEnglish-United Kingdom

Last updated on 2018-08-06 at 14:31