Houston Methodist. Leading Medicine

General Spine News

Lumbar Disc Arthroplasty XRay vs. CT Imaging

With the growing availability of total disc arthroplasty in place of fusion, the authors of the study chose to study the accuracy of xrays as opposed to comupted tomography (CT) scan in estimating placement of the implant. At the time of the study, most were evaluated with xray only.

Correct placement of an implant is critical in optimal long-term function. Malplacement may cause premature implant wear, implant loosening, and stresses on adjacent segments and facet joints.

Thirty-six patients who had undergone lumbar total disc arthroplasty were studied. Imaging is used to assess interpedicular midline placement as well as vertebral body placement. Anteroposterior (AP) and lateral views with plain Xrays were obtained. These were compared to CT scans. The authers found that there was no significant difference between xray and CT scans when evaluating for midline malplacement. However, the authors felt the correlation between xray and CT for vertebral body penetration was poor. Therefore, they recommend early postoperative CT.


Laurence Marshman, MD, et. al, The Accuracy and Validity of "Routine" X-rays in Estimating Lumbar Disc Arthroplasty Placement. In Spine. November 2007. Volume 32. Number 23. Pp. E661-666.

11/28/2007

*Disclaimer:* The information contained herein is compiled from a variety of sources. It may not be complete or timely. It does not cover all diseases, physical conditions, ailments or treatments. The information should NOT be used in place of visit with your healthcare provider, nor should you disregard the advice of your health care provider because of any information you read in this topic.
All content provided by eORTHOPOD® is a registered trademark of Medical Multimedia Group, L.L.C.. Content is the sole property of Medical Multimedia Group, LLC and used herein by permission.

Our Specialties

Where Does It Hurt?

Our Locations

  Follow Us

Follow us on Facebook Follow us on YouTube
Follow us on Twitter