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Cement leakage during vertebroplasty: an underestimated problem?
1Department of Orthopaedics and SCI, University of Ulm, Ulm, Germany. rene.schmidt@GMX.de
Summary
Vertebroplasty cement leakage detection using X-ray is unreliable, with CT scans offering superior accuracy. CT imaging is crucial for assessing cement leaks and postoperative pain following vertebroplasty.
Area of Science:
- Orthopaedic Surgery
- Radiology
- Medical Imaging
Background:
- Vertebroplasty is generally safe, but cement extrusion can cause severe complications.
- Current methods for detecting cement leakage, primarily X-ray, have limitations in accuracy and inter-observer reliability.
Purpose of the Study:
- To evaluate the diagnostic value of fluoroscopy and X-ray in detecting cement leakage during vertebroplasty compared to CT scans.
- To assess the inter-observer agreement for leak detection between imaging modalities.
Main Methods:
- Intraoperative lateral fluoroscopy findings were compared with postoperative X-rays (lateral and AP views) and CT scans.
- Two orthopaedic surgeons assessed X-ray findings, considering multiple cement leakages.
- Agreement rates and inter-observer reliability were calculated.
Main Results:
- X-ray detection rates for cement leaks were low (34% for lateral, 48% for lateral and AP views).
- CT scans revealed a higher rate of multiple cement leaks.
- Agreement between fluoroscopy/X-ray and CT ranged from 66% to 74%, with only fair inter-observer reliability.
Conclusions:
- X-ray imaging underestimates the incidence of cement leaks in vertebroplasty, especially when multiple leaks are considered.
- Fair inter-observer agreement and misinterpretation of leaks in basivertebral veins highlight the limitations of X-ray.
- CT scans are recommended for accurate assessment of cement leakage and evaluation of postoperative pain.