Journal article
Reliability of computer-assisted lumbar intervertebral measurements using a novel vertebral motion analysis system
The spine journal, v 14(2)
01 Feb 2014
PMID: 24239805
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
BACKGROUND CONTEXT: Traditional methods for the evaluation of in vivo spine kinematics introduce significant measurement variability. Digital videofluoroscopic techniques coupled with computer-assisted measurements have been shown to reduce such error, as well as provide detailed information about spinal motion otherwise unobtainable by standard roentgenograms. Studies have evaluated the precision of computer-assisted fluoroscopic measurements; however, a formal clinical evaluation and comparison with manual methods is unavailable. Further, it is essential to establish reliability of novel measurements systems compared with standard techniques.
PURPOSE: To determine the repeatability and reproducibility of sagittal lumbar intervertebral measurements using a new system for the evaluation of lumbar spine motion.
STUDY DESIGN: Reliability evaluation of digitized manual versus computer-assisted measurements of the lumbar spine using motion sequences from a videofluoroscopic technique.
PATIENT SAMPLE: A total of 205 intervertebral levels from 61 patients were retrospectively evaluated in this study.
OUTCOME MEASURES: Coefficient of repeatability (CR), limits of agreement (LOA), intra-class correlation coefficient (ICC; type 3,1), and standard error of measurement.
METHODS: Intervertebral rotations and translations (IVR and IVT) were each measured twice by three physicians using the KineGraph vertebral motion analysis (VMA) system and twice by three different physicians using a digitized manual technique. Each observer evaluated all images independently. Intra-and interobserver statistics were compiled based on the methods of Bland-Altman (CR, LOA) and Shrout-Fleiss (ICC, standard error of measurement).
RESULTS: The VMA measurements demonstrated substantially more precision compared with the manual technique. Intraobserver measurements were the most reliable, with a CR of 1.53 (manual, 8.28) for IVR, and 2.20 (manual, 11.75) for IVT. The least reliable measurements were interobserver IVR and IVT, with a CR of 2.15 (manual, 9.88) and 3.90 (manual, 12.43), respectively. The ICCs and standard error results followed the same pattern.
CONCLUSIONS: The VMA system markedly reduced variability of lumbar intervertebral measurements compared with a digitized manual analysis. Further, computer-assisted fluoroscopic imaging techniques demonstrate precision within the range of computer-assisted X-ray analysis techniques. (C) 2014 Elsevier Inc. All rights reserved.
Metrics
Details
- Title
- Reliability of computer-assisted lumbar intervertebral measurements using a novel vertebral motion analysis system
- Creators
- Matthew S. Yeager - Allegheny General HospitalDaniel J. Cook - Allegheny General HospitalBoyle C. Cheng - Allegheny General Hospital
- Publication Details
- The spine journal, v 14(2)
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- Olympus IMDS Medtronic Rachiotek Alphatec Applied Spine Scient'x Globus Stryker
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Surgery
- Web of Science ID
- WOS:000329971900011
- Scopus ID
- 2-s2.0-84892801465
- Other Identifier
- 991019168685404721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Clinical Neurology
- Orthopedics