i-Cobb - An innovative technique in spinal radiographic measurement

Shaw, Matthew, Izatt, Maree T., Adam, Clayton J., Licina, Paul, & Askin, Geoffrey N. (2009) i-Cobb - An innovative technique in spinal radiographic measurement. In Annual Scientific Meeting of the Spine Society of Australia, 17-19 April, 2009, Brisbane, Australia. (Unpublished)

Conference Paper Abstract (PDF 63kB)
Accepted Version.


The measurement of Cobb angles from radiographs is routine practice in spinal clinics. The technique relies on the use and availability of specialist equipment such as a goniometer, cobbometer or protractor. The aim of this study was to validate the use of i-Phone (Apple Inc) combined with Tilt Meter Pro software as compared to a protractor in the measurement of Cobb angles. Between November 2008 and December 2008 20 patients were selected at random from the Paediatric Spine Research Groups Database. A power calculation was performed which indicated if n=240 measurements the study had a 96% chance of detecting a 5 degree difference between groups. All patients had idiopathic scoliosis with a range of curve types and severities. The study found the i-Phone combined with Tilt Meter Pro software offers a faster alternative to the traditional method of Cobb angle measurement. The use of i-Phone offers a more convenient way of measuring Cobb angles in the outpatient setting. The intra-observer repeatability of the iPhone is equivalent to the protractor in the measurement of Cobb angles.

Impact and interest:

Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

211 since deposited on 26 Jun 2009
8 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 25969
Item Type: Conference Paper
Refereed: Yes
Keywords: cobb angle, i-phone, idiopathic scoliosis, protractor
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Institute for Creative Industries and Innovation
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2009 the authors
Deposited On: 26 Jun 2009 06:01
Last Modified: 24 Jun 2017 14:33

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page