Measurement Error of Lumbar Total Disc Replacement Range of Motion
SpinePublished 26 April 2006
Moe R. Lim, Randall T. Loder, Russel C. Huang, Stephen Lyman, Kai Zhang, Andrew A. Sama
Citations219
SJR quartileQ1
SJR score1.22
SNIP1.48
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TL;DR
The error and variability in measuring TDR radiographic range of motion (ROM) measurement variability should be considered when evaluating the success or failure of motion preservation in lumbar TDR.
Abstract
To be 95% certain that an implanted TDR prosthesis has any sagittal motion, a ROM of at least 4.6 degrees must be observed, which is the upper limit of intraobserver measurement variability for a TDR with a true ROM of 0 degrees. To be 95% certain that a change in TDR ROM has occurred between 2 measurements by the same observer, a change in ROM of at least 9.6 degrees must be observed (the entire range of +/-4.6 degrees intraobserver variability). ROM measurement variability should be considered when evaluating the success or failure of motion preservation in lumbar TDR.
Keywords
MedicineEngineering
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