Thomas J Vogl1, Robert Pflugmacher, Johannes Hierholzer, Gerd Stender, Matthew Gounis, Ajay Wakhloo, Christian Fiebig, Renate Hammerstingl. 1. *Universitaetsklinikum Frankfurt, Frankfurt am Main, Germany †Universitatsmedizin CHARITÉ, Klinik fur Unfall und Wiederherstellungschirurgie, Berlin, Germany ‡Klinikum Ernst-von Bergmann GmbH, Potsdam, Germany §Paracelsus Klinik, Marl, Germany; and ¶University of Massachusetts Medical School, Department of Radiology and Neurological Surgery, Worcester, Massachusetts.
Abstract
STUDY DESIGN: A novel randomized, controlled, unblinded clinical trial comparing 2 procedural interventions for painful osteoporotic vertebral compression fractures. OBJECTIVE: The primary study objective was to evaluate cement leakage for a cement directed kyphoplasty system (CDKS) with anteriorly biased cement flow and vertebroplasty. The secondary study objective was to compare adjacent level fracture rates and vertebral body height for these 2 intervention methods. SUMMARY OF BACKGROUND DATA: Cement leakage remains a significant clinical problem associated with vertebroplasty and kyphoplasty procedures. Uncontrolled cement flow in the posterior direction can result in leakage into the vertebral veins or spinal canal, leading to potentially serious clinical complications. METHODS:Seventy-seven patients with painful osteoporotic vertebral compression fractures were enrolled. Patients were randomized 2:1 for treatment with CDKS (49 patients, 65 levels) or vertebroplasty (28 patients, 39 levels). Cement leakage was evaluated from radiographs and computed tomographic scans. Three- and 12-month follow-ups included additional radiographs and computed tomographic scans to assess changes in vertebral body height and the incidence of new fractures. RESULTS: Treatment with CDKS significantly reduced the number of levels with leaks and the total number of leaks per level, as compared with vertebroplasty (P = 0.0132 and P = 0.0012, respectively). Significantly, fewer lateral cortical and spinal canal leaks (posterior leaks) occurred in the CDKS group (P = 0.0050, P = 0.02260, respectively). Three adjacent level fractures occurred in the vertebroplasty group, as compared with 2 in the CDKS group. Vertebral body height maintenance was equivalent. CONCLUSION: Cement directed kyphoplasty effectively reduces posterior cement leakage, reducing the risk of leakage related complications. LEVEL OF EVIDENCE: 2.
RCT Entities:
STUDY DESIGN: A novel randomized, controlled, unblinded clinical trial comparing 2 procedural interventions for painful osteoporotic vertebral compression fractures. OBJECTIVE: The primary study objective was to evaluate cement leakage for a cement directed kyphoplasty system (CDKS) with anteriorly biased cement flow and vertebroplasty. The secondary study objective was to compare adjacent level fracture rates and vertebral body height for these 2 intervention methods. SUMMARY OF BACKGROUND DATA: Cement leakage remains a significant clinical problem associated with vertebroplasty and kyphoplasty procedures. Uncontrolled cement flow in the posterior direction can result in leakage into the vertebral veins or spinal canal, leading to potentially serious clinical complications. METHODS: Seventy-seven patients with painful osteoporotic vertebral compression fractures were enrolled. Patients were randomized 2:1 for treatment with CDKS (49 patients, 65 levels) or vertebroplasty (28 patients, 39 levels). Cement leakage was evaluated from radiographs and computed tomographic scans. Three- and 12-month follow-ups included additional radiographs and computed tomographic scans to assess changes in vertebral body height and the incidence of new fractures. RESULTS: Treatment with CDKS significantly reduced the number of levels with leaks and the total number of leaks per level, as compared with vertebroplasty (P = 0.0132 and P = 0.0012, respectively). Significantly, fewer lateral cortical and spinal canal leaks (posterior leaks) occurred in the CDKS group (P = 0.0050, P = 0.02260, respectively). Three adjacent level fractures occurred in the vertebroplasty group, as compared with 2 in the CDKS group. Vertebral body height maintenance was equivalent. CONCLUSION: Cement directed kyphoplasty effectively reduces posterior cement leakage, reducing the risk of leakage related complications. LEVEL OF EVIDENCE: 2.
Authors: Ning Mao Kam; Julian Maingard; Hong Kuan Kok; Dinesh Ranatunga; Duncan Brooks; William C Torreggiani; Peter L Munk; Michael J Lee; Ronil V Chandra; Hamed Asadi Journal: Curr Treat Options Oncol Date: 2017-11-16