Clinical results of minimally invasive spine stabilization for spinal metastases

Hiroshi Uei, Yasuaki Tokuhashi, Masashi Oshima, Masafumi Maseda, Koji Matsumoto, Hirotoki Soma, Enshi Nakayama, Yuichiro Tachikawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The goal of the study was to evaluate minimally invasive palliative surgery and the effect of postoperative adjuvant therapy for metastatic spinal tumor with a limited vital prognosis. Of the 70 patients who underwent palliative surgery for metastatic spinal tumor at the authors' hospital between March 2012 and May 2016, thirty-three were treated with minimally invasive spine stabilization (MISt) using percutaneous pedicle screws (PPSs) and included in the current study. Of the 33 patients, 26 were men and 7 were women; mean age at surgery was 68.6 years. Intraoperatively, posterior decompression and fusion was performed in 17 (51.5%) patients and fusion only was performed in 16 (48.5%). Mean operative time was 202.5 minutes, mean intraoperative blood loss was 331.6 mL, and intraoperative blood loss was 1500 mL or greater in 2 (6.1%) patients. Median postoperative survival time determined using the Kaplan-Meier method was 11.0 months (95% confidence interval, 7.3-14.6). Regarding improvement of paralysis, neurological deficit was improved by at least 1 Frankel grade for 15 (45.5%) patients, and the number of ambulatory patients increased from 22 (66.7%) to 25 (75.8%). Postoperative adjuvant therapy included chemotherapy in 17 (51.5%) patients, radiotherapy in 21 (63.6%), and bone-modifying agent treatment in 25 (75.8%). The mean Barthel Index for activities of daily living improved from 53.5 preoperatively to 71.5 postoperatively. Discharge to home was possible for 23 (69.7%) patients. Activities of daily living for patients with metastatic spinal tumor were improved by minimally invasive palliative surgery with MISt using PPSs and postoperative adjuvant therapy.

Original languageEnglish
Pages (from-to)e693-e698
Issue number4
Publication statusPublished - 1 Jul 2017


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