Unilateral transpedicular percutaneous vertebroplasty: Initial experience

Ann K. Kim, Mary E. Jensen, Jacques E. Dion, Patricia A. Schweickert, Timothy J. Kaufmann, David F. Kallmes

Research output: Contribution to journalArticlepeer-review

148 Scopus citations


PURPOSE: To compare the radiographic and clinical outcomes of a unipediculate approach with those of standard bipediculate vertebroplasty. MATERIALS AND METHODS: Retrospective review of percutaneous vertebroplasties yielded 18 vertebrae in 17 patients that were treated with a standard bipediculate approach and 57 vertebrae in 32 patients that were treated with a modified unipediculate approach. Anteroposterior radiographs obtained after the procedure were viewed to calculate the percentage of cement opacification in both vertebral halves, and mean values were compared between uni- and bipediculate approaches by using a two-tailed Student t test. Clinical outcomes, including pain relief and change in pain medication requirements, were compared in the two groups by using the χ2 or Fisher exact test. RESULTS: With the unipediculate approach, filling across the midline was achieved in 55 (96%) of 57 injections. Mean opacification of vertebral body halves was 83% ± 19 (SD) and 77% ± 16 for the bipediculate and unipediculate approaches, respectively (P = .19). Among patients with available follow-up data, 16 (94%) of 17 patients who underwent the bipediculate procedure and 28 (88%) of 32 patients who underwent the unipediculate procedure achieved adequate pain relief (P = .65) with mean decreases in pain severity of 7.3 ± 3.1 and 6.6 ± 2.9, respectively. CONCLUSION: Use of a unipediculate approach in percutaneous vertebroplasty allows filling of both vertebral halves from a single puncture site with no statistically significant difference in clinical outcome from that of bipediculate vertebroplasty.

Original languageEnglish (US)
Pages (from-to)737-741
Number of pages5
Issue number3
StatePublished - 2002


  • Spine, fractures
  • Spine, injuries
  • Spine, interventional procedures

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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