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A prospective, randomized, controlled trial of robot‐assisted vs freehand pedicle screw fixation in spine surgery

2016; Wiley; Volume: 13; Issue: 3 Linguagem: Inglês

10.1002/rcs.1779

1478-596X

Ho‐Joong Kim, Whan‐Ik Jung, Bong‐Soon Chang, Choon‐Ki Lee, Kyoung‐Tak Kang, Jin S. Yeom,

Medical Imaging and Analysis

Abstract Background The purpose of this study was to compare the accuracy and safety of an instrumented posterior lumbar interbody fusion (PLIF) using a robot‐assisted minimally invasive (Robot‐PLIF) or a conventional open approach (Freehand‐PLIF). Methods Patients undergoing an instrumented PLIF were randomly assigned to be treated using a Robot‐PLIF (37 patients) and a Freehand‐PLIF (41 patients). Results For intrapedicular accuracy, there was no significant difference between the groups ( P = 0.534). For proximal facet joint accuracy, none of the 74 screws in the Robot‐PLIF group violated the proximal facet joint, while 13 of 82 in the Freehand‐PLIF group violated the proximal facet joint ( P < 0.001). The average distance of the screws from the facets was 5.2 ± 2.1 mm and 2.7 ± 1.6 mm in the Robot‐PLIF and Freehand‐PLIF groups, respectively ( P < 0.001). Conclusion Robotic‐assisted pedicle screw placement was associated with fewer proximal facet joint violations and better convergence orientations.