Computed tomography assessment of the accuracy of in vivo placement of artificial discs in the lumbar spine including radiographic and clinical consequences

Spine
Vikas V PatelRick B Delamarter

Abstract

Prospective cohort study of 52 patients who had undergone artificial lumbar disc replacement. To evaluate the implantation accuracy of prosthesis positioning, subsequent facet joint changes and prosthesis migration, and the clinical consequences of implant position. Accuracy of spinal prosthesis implantation has not been evaluated rigorously, especially with a mini-incision approach. It is unknown if the inexact placement of a mobile device in the spine has any biomechanical, radiographic, or clinical repercussions. A total of 52 consecutive patients were treated using standard methods of disc implantation with an intervertebral prosthesis. Computed tomography scans were performed within 3 days and again at 6 to 24 months. An independent radiologist analyzed the images for prosthesis position, rotation, migration, and facet changes. Results were compared with clinical outcome, measured by the Visual Analog Scale and Oswestry Disability Index. Deviation of the prosthesis from the center position was under 1.2 mm, and rotation off of midline was under 12 degrees. Follow-up CT scans showed no migration or facet changes. Regression analysis showed no correlation of prosthesis position with clinical outcome. Current prosthetic disc ...Continue Reading

References

Oct 18, 2002·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·Marek SzpalskiMichael Mayer
Oct 18, 2002·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·Helmut D Link
Aug 7, 2003·Journal of Spinal Disorders & Techniques·Jack E ZiglerDonna D Ohnmeiss
Aug 7, 2003·Journal of Spinal Disorders & Techniques·André van OoijAb J Verbout
Aug 7, 2003·Journal of Spinal Disorders & Techniques·Paul C McAfeeBryan W Cunningham
Nov 16, 2004·The Spine Journal : Official Journal of the North American Spine Society·Richard D GuyerBryan W Cunningham

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Citations

Dec 4, 2009·Journal of Spinal Disorders & Techniques·Giuseppe M V BarbagalloVincenzo Albanese
Jul 12, 2013·Journal of Neuroengineering and Rehabilitation·Julie O'ShaughnessyMartin Descarreaux
Jul 3, 2007·The Spine Journal : Official Journal of the North American Spine Society·Laurence A G MarshmanManoj Krishna
Jan 1, 2012·International Journal of Spine Surgery·Jeffrey B LowJames J Yue

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