Conversion to hypertrophic vertebral pseudarthrosis following percutaneous vertebroplasty.

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
Satoshi KawaguchiToshihiko Yamashita

Abstract

To determine the role of percutaneous vertebroplasty (PVP) in bone formation and the union of vertebral pseudarthrosis, we analyzed 14 patients with an average follow-up duration of 21 months. Evaluation methods included back pain (visual analog scale: VAS), wedge angle, dynamic mobility, radiographic remodeling including callus and spur formation, and union status. The Student's t test was used for statistical analysis and a probability of less than 0.05 was determined as a significant difference. Back pain improved in all 14 patients with a VAS score of 57.8 +/- 23.5 mm (average +/- standard deviation) preoperatively and 14.7 +/- 16.4 mm at the final follow-up (P < 0.001). The wedge angle decreased from 21.6 degrees +/- 8.3 degrees (average +/- standard deviation) preoperatively to 13.2 degrees +/- 6.9 degrees at the final follow-up (P < 0.001). Callus formation was seen in four patients. Bony spurs were seen in the affected vertebra in preoperative radiographs in all patients, and were further developed to a solidified form during follow up after PVP. Dynamic mobility of the affected vertebrae was 6.9 +/- 2.9 mm preoperatively, which decreased to 1.1 degrees +/- 0.7 degrees at the final follow-up (P < 0.001). Notably, all pa...Continue Reading

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Citations

Jan 10, 2012·Journal of Neurosurgery. Spine·Premik NagadAbhay Nene
Sep 4, 2012·Journal of Neurosurgery. Spine·Kenji MurataToshihiko Yamashita

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