{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T18:57:32Z","timestamp":1778007452357,"version":"3.51.4"},"reference-count":29,"publisher":"FapUNIFESP (SciELO)","issue":"2","license":[{"start":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T00:00:00Z","timestamp":1548979200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T00:00:00Z","timestamp":1548979200000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T00:00:00Z","timestamp":1548979200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Assoc. Med. Bras."],"abstract":"<jats:p>SUMMARY OBJECTIVE: To present the surgical results of patients who underwent axis screw instrumentation, discussing surgical nuances and complications of the techniques used. METHODS: Retrospective case-series evaluation of patients who underwent spinal surgery with axis instrumentation using screws. RESULTS: Sixty-five patients were included in this study. The most common cause of mechanical instability was spinal cord trauma involving the axis (36 patients \u2013 55.4%), followed by congenital craniocervical malformation (12 patients \u2013 18.5%). Thirty-seven (57%) patients required concomitant C1 fusion. Bilateral axis fixation was performed in almost all cases. Twenty-three patients (35.4%) underwent bilateral laminar screws fixation; pars screws were used in twenty-two patients (33.8%), and pedicular screws were used isolated in only three patients (4.6%). In fourteen patients (21.5%), we performed a hybrid construction. There was no neurological worsening nor vertebral artery injury in this series. CONCLUSION: Axis screw instrumentation proved to be a safe and efficient method for cervical stabilization. Laminar and pars screws were the most commonly used<\/jats:p>","DOI":"10.1590\/1806-9282.65.2.198","type":"journal-article","created":{"date-parts":[[2019,3,16]],"date-time":"2019-03-16T20:40:02Z","timestamp":1552768802000},"page":"198-203","source":"Crossref","is-referenced-by-count":5,"title":["Axis screws: results and complications of a large case series"],"prefix":"10.1590","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1940-3569","authenticated-orcid":false,"given":"Cleiton","family":"Formentin","sequence":"first","affiliation":[{"name":"University of Campinas, Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9071-4688","authenticated-orcid":false,"given":"Erion Junior de","family":"Andrade","sequence":"additional","affiliation":[{"name":"University of Campinas, Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9002-2822","authenticated-orcid":false,"given":"Fernando Luis","family":"Maeda","sequence":"additional","affiliation":[{"name":"University of Campinas, Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8684-1780","authenticated-orcid":false,"given":"Enrico","family":"Ghizoni","sequence":"additional","affiliation":[{"name":"University of Campinas, Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3347-3886","authenticated-orcid":false,"given":"Helder","family":"Tedeschi","sequence":"additional","affiliation":[{"name":"University of Campinas, Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2645-0483","authenticated-orcid":false,"given":"Andrei F.","family":"Joaquim","sequence":"additional","affiliation":[{"name":"University of 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