ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026
Thoracolumbar burst fractures: robot-assisted mono-segment fixation with vertebral body grafting versus short-segment fixation - a propensity score-matched cohort study.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo compare robot-assisted mono-segment pedicle fixation with vertebral body grafting (RMF-VBG) versus conventional short-segment fixation with grafting (SF-VBG) for neurologically intact thoracolumbar burst fractures, focusing on radiographic maintenance of correction and perioperative efficiency.
methodsWe performed a single-center retrospective cohort study (2018-2022) including adults with single-level AO-A3 fractures (T11-L2), ASIA E, treated within 14 days. One-to-one propensity score matching balanced baseline factors. The primary endpoint was loss of sagittal Cobb angle (SCA) at 12 months. Secondary outcomes included operative time, blood loss, postoperative length of stay (postop LOS), pain (VAS), Oswestry Disability Index (ODI), anterior vertebral body height ratio (AVBHr), pedicle screw accuracy (Gertzbein-Robbins), facet joint violation (FJV), perioperative morbidity and adjacent segment degeneration (ASD).
resultsA total of 152 patients were matched (76 per group). RMF-VBG achieved significantly shorter operative time (62.38 ± 14.26 vs 89.56 ± 20.36 min), reduced blood loss (82.54 ± 19.69 vs 126.38 ± 28.26 mL), and shorter postop LOS (5.23 ± 1.72 vs 7.16 ± 1.39 days; all p<0.001). SCA and AVBHr trajectories were comparable; SCA loss at 12 months did not differ (mean difference -0.07°, 95% CI -0.30 to 0.16; p = 0.551). The 95% CI for the between-group difference in 12-month SCA loss remained within the ±2.0° MCID, indicating no clinically important difference. Screw placement accuracy (Grade A) was higher with RMF-VBG (98.35% vs 90.13%), and FJV Grade 2 was less frequent (0% vs 3.95%). Overall morbidity and ASD were uncommon and similar between groups.
conclusionFor selected thoracolumbar burst fractures, RMF-VBG maintained sagittal correction within the prespecified MCID compared with SF-VBG, while improving perioperative efficiency and screw-related precision.
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