Article Text
Abstract
Introduction Robotic guidance (RG) and computer-assisted navigation (NV) have seen increased adoption in instrumented spine surgery over the last decade. Although there exists some evidence that these techniques increase radiological pedicle screw accuracy compared with conventional freehand (FH) surgery, this may not directly translate to any tangible clinical benefits, especially considering the relatively high inherent costs. As a non-randomised, expertise-based study, the European Robotic Spinal Instrumentation Study aims to create prospective multicentre evidence on the potential comparative clinical benefits of RG, NV and FH in a real-world setting.
Methods and analysis Patients are allocated in a non-randomised, non-blinded fashion to the RG, NV or FH arms. Adult patients that are to undergo thoracolumbar pedicle screw instrumentation for degenerative pathologies, infections, vertebral tumours or fractures are considered for inclusion. Deformity correction and surgery at more than five levels represent exclusion criteria. Follow-up takes place at 6 weeks, as well as 12 and 24 months. The primary endpoint is defined as the time to revision surgery for a malpositioned or loosened pedicle screw within the first postoperative year. Secondary endpoints include patient-reported back and leg pain, as well as Oswestry Disability Index and EuroQOL 5-dimension questionnaires. Use of analgesic medication and work status are recorded. The primary analysis, conducted on the 12-month data, is carried out according to the intention-to-treat principle. The primary endpoint is analysed using crude and adjusted Cox proportional hazards models. Patient-reported outcomes are analysed using baseline-adjusted linear mixed models. The study is monitored according to a prespecified monitoring plan.
Ethics and dissemination The study protocol is approved by the appropriate national and local authorities. Written informed consent is obtained from all participants. The final results will be published in an international peer-reviewed journal.
Trial registration number Clinical Trials.gov registry NCT03398915; Pre-results, recruiting stage.
- robotics
- neurosurgery
- spine
- instrumentation
- pedicle screw
- orthopaedic and trauma surgery
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Footnotes
ET and MLS are joint senior authors.
VES and GM are joint first authors.
VES and GM contributed equally.
Twitter @staartjesneuro
Contributors VES, GM, PMvK, ET and MLS conceived and designed the study. VES, PMvK and JWRT conceived the statistical analysis plan. VES, GM, PMvK, ET and MLS prepared the first draft of the study protocol. VES, GM, PMvK, HAJE, AA, CB, JFCW, SU, FH, CGS, MAS, ML, JP, DB, IF, BS, VR, Y-MR, SMK, BM, NK, P-PG, CT, JWRT, ET and MLS contributed to the final design of this study protocol, assisted with drafting the manuscript and carried out a critical revision of the manuscript. VES, GM, PMvK, HAJE, AA, CB, JFCW, SU, FH, CGS, MAS, ML, JP, DB, IF, BS, VR, Y-MR, SMK, BM, NK, P-PG, CT, JWRT, ET and MLS approved the final version of the manuscript and agree to be accountable for the accuracy of the work. MLS supervised the work and is the guarantor.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests VES, GM, PMvK, ET and MLS conceived and designed the study. VES, PMvK and JT conceived the statistical analysis plan. VES, GM, PMvK, ET and MLS prepared the first draft of the study protocol. VES, GM, PMvK, HAJE, AA, CB, JFCW, SU, FH, CGS, MAS, ML, JP, DB, IF, BS, VR, Y-MR, SMK, BM, NK, P-PG, CT, JT, ET and MLS contributed to the final design of this study protocol, assisted with drafting the manuscript and carried out a critical revision of the manuscript. VES, GM, PMvK, HAJE, AA, CB, JFCW, SU, FH, CGS, MAS, ML, JP, DB, IF, BS, VR, Y-MR, SMK, BM, NK, P-PG, CT, JT, ET and MLS approved the final version of the manuscript and agree to be accountable for the accuracy of the work. MLS supervised the work and is the guarantor.
Ethics approval The study protocol is approved by the appropriate national and local authorities.
Provenance and peer review Not commissioned; externally peer reviewed.