{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T20:47:33Z","timestamp":1785444453905,"version":"3.56.0"},"reference-count":30,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2008,10]]},"abstract":"<jats:sec><jats:title>Object<\/jats:title><jats:p>The occipital condyle has never been studied as a viable structure that could permit bone purchase by fixation devices for occipitocervical fusion. The authors propose occipital condyle screw placement as a possible alternative to conventional occipitocervical fixation techniques.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Six adult cadaver heads (12 total occipital condyles) were studied, and the StealthStation image-guidance system was used for preoperative planning of occipital condyle screw placement. Morphometric studies of the occipital condyle were performed. A 3.5-mm Vertex screw was then placed in the occipital condyle with image-guided assistance in 3 specimens. Operations in the remaining 3 specimens proceeded using anatomical markers and calculated degrees of angulation for screw placement with a free-hand technique. Postoperatively the cadaver heads were rescanned and reanalyzed to determine the success of screw placement and its effect on hypoglossal canal volume.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All screws were successfully placed with no sign of lateral or medial cortical breach. Two screws had bicortical purchase. There was no change in hypoglossal canal volume in any specimen.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Occipital condyle screw placement is a safe and viable option for occipitocervical fixation and could be a preferred procedure in selected cases. However, further biomechanical studies are required to compare its reliability to other more established techniques.<\/jats:p><\/jats:sec>","DOI":"10.3171\/spi.2008.9.10.347","type":"journal-article","created":{"date-parts":[[2011,2,23]],"date-time":"2011-02-23T21:38:43Z","timestamp":1298497123000},"page":"347-353","source":"Crossref","is-referenced-by-count":47,"title":["Cadaveric study for placement of occipital condyle screws: technique and effects on surrounding anatomic structures"],"prefix":"10.3171","volume":"9","author":[{"given":"Frank","family":"La Marca","sequence":"first","affiliation":[{"name":"1Department of Neurosurgery, University of Michigan Health System, Ann Arbor, Michigan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geoffrey","family":"Zubay","sequence":"additional","affiliation":[{"name":"2Department of Neurosurgery, Northwestern University, Chicago; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Morrison","sequence":"additional","affiliation":[{"name":"2Department of Neurosurgery, Northwestern University, Chicago; 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