Measurement error of lumbar total disc replacement range of motion

Spine
Moe R LimFrank P Cammisa

Abstract

A retrospective review of lumbar total disc replacement (TDR) radiographs. To determine the error and variability in measuring TDR radiographic range of motion (ROM). Motion preservation is the driving force behind lumbar TDR technology. In the recent literature, sagittal radiographic TDR ROM as low as 2 degrees has been reported. In these studies, ROM was determined by using the Cobb method to measure TDR sagittal alignment angles in flexion-extension lateral radiographs. However, previous studies in the spinal deformity literature have shown that the Cobb method is very susceptible to measurement error. There were 5 observers, including 2 attending orthopedic spine surgeons, 1 spine fellow, 1 fifth-year resident, and 1 fourth-year resident, who measured the ROM of 50 ProDisc II (Synthes Spine Solutions, New York, NY) TDRs on standard flexion-extension lumbar spine radiograph sets. Repeated measurements were made on 2 occasions using the Cobb method. Measurement variability was calculated using 3 statistical methods. The 3 statistical methods resulted in extremely similar values for TDR ROM observer variability. Overall, the intraobserver variability of TDR ROM measurement was +/-4.6 degrees, and interobserver variability was ...Continue Reading

References

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Citations

Jan 6, 2007·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Christoph J SiepeH Michael Mayer
Oct 4, 2007·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Ahmet AlanayFethullah C Oner
Sep 12, 2007·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Victor KosmopoulosConstantin Schizas
May 23, 2008·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Victor KosmopoulosConstantin Schizas
Oct 24, 2008·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Fabio GalbuseraMaurizio Fornari
Feb 16, 2013·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Jean-Yves LazennecMarc-Antoine Rousseau
Nov 20, 2012·Journal of Manipulative and Physiological Therapeutics·Rune M MieritzJan Hartvigsen
Aug 12, 2009·The Spine Journal : Official Journal of the North American Spine Society·Christopher M Bono
Jul 12, 2007·Technology Evaluation Center Assessment Program. Executive Summary·UNKNOWN BlueCross BlueShield Association
May 13, 2011·Acta Orthopaedica. Supplementum·Svante Berg
Jul 18, 2020·Global Spine Journal·Joep KitzenPaul C P H Willems
Nov 15, 2019·Neurosurgery·Faheem A SandhuRolando Garica

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