{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T20:47:38Z","timestamp":1785444458757,"version":"3.56.0"},"reference-count":29,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec id=\"st1\">\n<jats:title>Background: <\/jats:title>\n<jats:p>Surgical techniques for stabilization of the occipital cervical junction have traditionally consisted of screw-based techniques applied in conjunction with occipital plating and rods connected to subaxial instrumentation in the form of pars, pedicle, or lateral mass screws. In patients with type 1 Chiari malformation (CM-1) and evidence of occipital cervical junction instability who have undergone posterior decompression, the occipital condyle (OC) represents a potential alternative cranial fixation point. To date, this technique has only been described in pediatric case reports and morphometric cadaver studies.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st2\">\n<jats:title>Methods: <\/jats:title>\n<jats:p>Patients underwent posterior fossa decompression for treatment of CM. Subsequently, patients received occipital cervical stabilization using OC screws.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st3\">\n<jats:title>Results: <\/jats:title>\n<jats:p>Patients were successfully treated with no post-operative morbidity. Patient 2 was found to have pseudoarthrosis and underwent revision. Both patients continue to do well at 1-year follow-up.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st4\">\n<jats:title>Conclusion: <\/jats:title>\n<jats:p>Placement of the OC screw offers advantages over traditional plate-based occipital fixation in that bone removal for suboccipital decompression is not compromised by the need for hardware placement, screws are hidden underneath ample soft tissue in patients with thin skin which prevents erosion, and the OC consists of primarily cortical bone which provides for robust tricortical fixation. These cases demonstrate the novel application of the OC screw fixation technique to the treatment of occipital cervical junction instability in adult patients undergoing simultaneous posterior fossa decompression.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_26_2021","type":"journal-article","created":{"date-parts":[[2021,11,2]],"date-time":"2021-11-02T06:06:24Z","timestamp":1635833184000},"page":"543","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Occipital condyle screw fixation after posterior decompression for Chiari malformation: Technical report and application"],"prefix":"10.25259","volume":"12","author":[{"given":"Arpan R.","family":"Chakraborty","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Panayiotis E.","family":"Pelargos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camille K.","family":"Milton","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael D.","family":"Martin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew M.","family":"Bauer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ian F.","family":"Dunn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"10894","published-online":{"date-parts":[[2021,11,2]]},"reference":[{"key":"10.25259\/SNI_26_2021\/ref-1","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1097\/BSD.0b013e31825bfeea","article-title":"Occipitocervical fusion via occipital condylar fixation: A clinical case series","volume":"27","author":"Ahmadian","year":"2014","journal-title":"J Spinal Disord Tech"},{"key":"10.25259\/SNI_26_2021\/ref-2","doi-asserted-by":"crossref","first-page":"171","DOI":"10.3171\/2010.4.PEDS09551","article-title":"Placement of occipital condyle screws for occipitocervical fixation in a pediatric patient with occipitocervical instability after decompression for Chiari malformation","volume":"6","author":"Bekelis","year":"2010","journal-title":"J Neurosurg Pediatr"},{"key":"10.25259\/SNI_26_2021\/ref-3","doi-asserted-by":"crossref","first-page":"214","DOI":"10.4184\/asj.2018.12.2.214","article-title":"Morphometric evaluation of occipital condyles: Defining optimal trajectories and safe screw lengths for occipital condyle-based occipitocervical fixation in Indian population","volume":"12","author":"Bosco","year":"2018","journal-title":"Asian Spine J"},{"key":"10.25259\/SNI_26_2021\/ref-4","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1007\/s10143-017-0857-5","article-title":"The effect of posterior fossa decompression in adult Chiari malformation and basilar invagination: A systematic review and meta-analysis","volume":"41","author":"de Oliveira Sousa","year":"2018","journal-title":"Neurosurg Rev"},{"key":"10.25259\/SNI_26_2021\/ref-5","doi-asserted-by":"crossref","first-page":"961","DOI":"10.1227\/01.NEU.0000312706.47944.35","article-title":"Surgical treatment of occipitocervical instability","volume":"63","author":"Finn","year":"2008","journal-title":"Neurosurgery"},{"key":"10.25259\/SNI_26_2021\/ref-6","doi-asserted-by":"crossref","first-page":"794829","DOI":"10.1155\/2015\/794829","article-title":"The role of the craniocervical junction in craniospinal hydrodynamics and neurodegenerative conditions","volume":"2015","author":"Flanagan","year":"2015","journal-title":"Neurol Res Int"},{"key":"10.25259\/SNI_26_2021\/ref-7","article-title":"Die Leitungsbahnen des Schmerzgef\u00fchls und die Chirurgische Behandlung der Schmerzzust\u00e4nde","author":"Foerster","year":"1927"},{"key":"10.25259\/SNI_26_2021\/ref-8","doi-asserted-by":"crossref","first-page":"509","DOI":"10.3171\/2009.11.SPINE09172","article-title":"Posterior occipitocervical (C0-3) fusion using polyaxial occipital condyle to cervical spine screw and rod fixation: A radiographic and cadaveric analysis","volume":"12","author":"Frankel","year":"2010","journal-title":"J Neurosurg Spine"},{"key":"10.25259\/SNI_26_2021\/ref-9","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.ocl.2011.08.009","article-title":"Occipitocervical fusion","volume":"43","author":"Garrido","year":"2012","journal-title":"Orthop Clin North Am"},{"key":"10.25259\/SNI_26_2021\/ref-10","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1007\/s00276-019-02344-2","article-title":"Morphometric analysis of occipital condyles using alternative imaging technique","volume":"42","author":"Gumussoy","year":"2020","journal-title":"Surg Radiol Anat"},{"key":"10.25259\/SNI_26_2021\/ref-11","doi-asserted-by":"crossref","first-page":"e1096","DOI":"10.1016\/j.wneu.2019.05.072","article-title":"Can the etiopathogenesis of chiari malformation be craniocervical junction stabilization difference? 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