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Radiological Follow-up Results of Cemented Vertebrae after Vertebroplasty

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2016, 23(1), pp.25-30
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery

Jin-Hwan Kim 1

1인제대학교

Accredited

ABSTRACT

Study Design: A retrospective study. Objectives: To assess radiological follow-up results, including progression of bone cement augmented vertebrae, of patients who underwent percutaneous vertebroplasty (PVP). Summary of Literature Review: There are few studies of radiological follow-up results that include progression of bone cement augmented vertebrae after PVP, regardless of good clinical results. Materials and Methods: Between January 2000 and August 2007, 253 patients were treated with PVP for osteoporotic compression fracture. Among them, 81 patients died during follow-up and 101 patients (157 vertebrae) were available for follow-up over 7 years. We analyzed the radiologic outcomes, focusing on augmented bone cement feature and progressive change with adjacent vertebrae. Results: The mean follow-up period was 7.9 years. Anterior body height in the last follow-up was improved about 0.3 mm compared with the preprocedural value, but this improvement was not statistically significant. The focal kyphotic angle was reduced from 12.3° at the preprocedural state to 11.7° at the postprocedural state but this change was also not statistically significant (p>0.05). Out of the 101 cases, we observed 7 cases of radiolucent line with decreased bone density in the adjacent area of bone cement and 5 cases of bone cement cracks accompanied with vertebral collapse were observed. Eleven patients (10.8%) had a solid spontaneous fusion, and 8 patients (7.9%) had partially fused with adjacent vertebrae. Conclusions: The bone cement augmented vertebrae showed stable radiologic progression without significant changes in vertebral height or kyphotic angle. After percutaneous vertebroplasty, unpredictable spontaneous fusion with proximal adjacent vertebrae developed at a higher rate than 10% rate.

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