Removal or retention of minimally invasive screws in thoracolumbar fractures? Systematic review and case–control study

Abstract

Background There is uncertainty regarding delayed removal versus retention of minimally invasive screws following percutaneous fixation for thoracolumbar fractures. We conducted a systematic review and case–control study to test the hypothesis that delayed metalwork removal following percutaneous fixation for thoracolumbar fractures improves outcome. Methods A systematic review was performed in accordance with the PRISMA guidelines. Our case–control study retrospectively evaluated 55 consecutive patients with thoracolumbar fractures who underwent percutaneous fixation in a single unit: 19 with metalwork retained (controls) and 36 with metalwork removed. Outcomes were the Oswestry Disability Index (ODI), a supplemental questionnaire, and complications. Results The systematic review evaluated nine articles. Back pain was reduced in most patients after metalwork removal. One study found no difference in the ODI after versus before metalwork removal, whereas three studies reported significant improvement. Six studies noted no significant alterations in radiological markers of stability after metalwork removal. Mean complication rate was 1.7% (0–6.7). Complications were superficial wound infection, screw breakage at the time of removal, pull-out screw, and a broken rod. In the case–control study, both groups were well matched. For metalwork removal, mean operative time was 69.5 min (range 30–120) and length of stay was 1.3 days (0–4). After metalwork removal, 24 (68.6%) patients felt better, 10 (28.6%) the same and one felt worse. Two patients had superficial hematomas, one had a superficial wound infection, and none required re-operation. Metalwork removal was a significant predictor of return to work or baseline household duties (odds ratio 5.0 [1.4–18.9]). The ODI was not different between groups. Conclusions The findings of both the systematic review and our case–control study suggest that removal of metalwork following percutaneous fixation of thoracolumbar fractures is safe and is associated with improved outcome in most patients.

Effective Method of Pedicle Screw Fixation in Patients with Neurologically Intact Thoracolumbar Burst Fractures: A Systematic Review of Studies Published Over the Last 20 Years

“…A systematic review or meta-analysis is the most compelling approach, as it allows for compiling results from included studies to enhance the level of evidence for their conclusions. In the context of TLBF, we found 11 systematic reviews and meta-analyses exploring various aspects of PSF [81][82][83][84][85][86][87][88][89][90][91]. However, these metaanalyses have two signi cant drawbacks.…”

“…The question of temporary PSF was investigated in two meta-analyses [84,90]. Both authors concluded that removing the xation system leads to improved quality of life in the postoperative period without subsequent deterioration of radiological indicators.…”

“…It should be noted that these conclusions could also be in uenced by the number of included studies and data processing methodology. For instance, Kweh et al [84] used only two studies to construct forest plots for the VAS and Oswestry scales, while Visagan et al [90] solely relied on descriptive statistical methods. In the present study, when comparing temporary and permanent short-segment PSF, we used results from 28 and 19 articles, respectively.…”