{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/98229"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/98229","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Computed tomography study of safe implantation corridors in rabbit vertebrae","abstract":"Objectives: A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: CT imaging of 20 adult New Zealand white rabbits was evaluated using 3-D multiplanar reconstruction, and safe corridors were determined. Following corridor determination, implant placement was performed, and imaging was repeated. Results: The cranial and caudal endplates contained the majority of the vertebral bone stock, and were an average of 3.14 and 3.30 mm in length, respectively. The mean safe corridor angle was 62.9 degrees (range 58.8-66.7), and the mean width of the corridor was 2.03 mm (1.60- 2.35). Post-placement imaging revealed that 35% of the pins demonstrated errors of placement, most commonly canal impingement. Conclusions: The results of the corridor evaluation indicate that an insertion angle of approximately 60 degrees relative to the sagittal midline is appropriate for implant insertion in the lumbar vertebrae of NZW rabbits. Additionally, due to the hourglass shape of rabbit vertebrae, the endplates provide maximal bone stock for implant purchase, so insertion should be attempted in these regions. However, the high percentage of errors in placement indicate the need to more clearly define entry points to access the canal, and highlight the challenges of appropriate placement in the small bones of rabbits.","abstract_html":"Objectives: A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: CT imaging of 20 adult New Zealand white rabbits was evaluated using 3-D multiplanar reconstruction, and safe corridors were determined. Following corridor determination, implant placement was performed, and imaging was repeated. Results: The cranial and caudal endplates contained the majority of the vertebral bone stock, and were an average of 3.14 and 3.30 mm in length, respectively. The mean safe corridor angle was 62.9 degrees (range 58.8-66.7), and the mean width of the corridor was 2.03 mm (1.60- 2.35). Post-placement imaging revealed that 35% of the pins demonstrated errors of placement, most commonly canal impingement. Conclusions: The results of the corridor evaluation indicate that an insertion angle of approximately 60 degrees relative to the sagittal midline is appropriate for implant insertion in the lumbar vertebrae of NZW rabbits. Additionally, due to the hourglass shape of rabbit vertebrae, the endplates provide maximal bone stock for implant purchase, so insertion should be attempted in these regions. However, the high percentage of errors in placement indicate the need to more clearly define entry points to access the canal, and highlight the challenges of appropriate placement in the small bones of rabbits.","abstract_has_math":false,"creators":["Moran, Clara Elizabeth"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"VMS-Veterinary Clinical Medcne","degree_department":null,"school":null,"contributors":["Harper, Tisha A. M.","Whittington, Julia","Joslyn, Steve","Hague, Devon","Mitchell, Mark"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-09-29T16:39:08Z","date_published":"2017-09-29T16:39:08Z","updated_at":"2026-07-22T22:24:35Z","subjects":["Rabbit","Spinal"],"languages":["en"],"rights":["Copyright 2017 Clara Moran"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/98229","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Harper, Tisha A. M.","Whittington, Julia","Joslyn, Steve","Hague, Devon","Mitchell, Mark"]},{"key":"dc:creator","label":"Author","values":["Moran, Clara Elizabeth"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-09-29T16:39:08Z","2019-09-30T09:15:32Z","2017-06-12","2017-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["VMS-Veterinary Clinical Medcne"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Rabbit","Spinal"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Clara Moran"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/98229"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Objectives: A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: CT imaging of 20 adult New Zealand white rabbits was evaluated using 3-D multiplanar reconstruction, and safe corridors were determined. Following corridor determination, implant placement was performed, and imaging was repeated. Results: The cranial and caudal endplates contained the majority of the vertebral bone stock, and were an average of 3.14 and 3.30 mm in length, respectively. The mean safe corridor angle was 62.9 degrees (range 58.8-66.7), and the mean width of the corridor was 2.03 mm (1.60- 2.35). Post-placement imaging revealed that 35% of the pins demonstrated errors of placement, most commonly canal impingement. Conclusions: The results of the corridor evaluation indicate that an insertion angle of approximately 60 degrees relative to the sagittal midline is appropriate for implant insertion in the lumbar vertebrae of NZW rabbits. Additionally, due to the hourglass shape of rabbit vertebrae, the endplates provide maximal bone stock for implant purchase, so insertion should be attempted in these regions. However, the high percentage of errors in placement indicate the need to more clearly define entry points to access the canal, and highlight the challenges of appropriate placement in the small bones of rabbits.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2019-08-01","The student, Clara Moran, accepted the attached license on 2017-06-12 at 06:05.","The student, Clara Moran, submitted this Thesis for approval on 2017-06-12 at 06:14.","This Thesis was approved for publication on 2017-06-12 at 14:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11207 on 2017-09-29 at 11:13:35","Made available in DSpace on 2017-09-29T16:39:08Z (GMT). No. of bitstreams: 2 MORAN-THESIS-2017.pdf: 985242 bytes, checksum: b7197f915849599ae233afd62f2ea410 (MD5) LICENSE.txt: 4208 bytes, checksum: 1c938b6191a30034695fc2f132eb5aa1 (MD5) Previous issue date: 2017-06-12","Embargo set by: Colleen Fallaw for item 103376 Lift date: 2019-09-29T16:39:52Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Colleen Fallaw for item 103376 Lift date: 2019-09-29T17:52:45Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 103376 on 2019-09-30T09:15:32Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Computed tomography study of safe implantation corridors in rabbit vertebrae"]}]}],"canonical_facts":{"dc:contributor":["Harper, Tisha A. M.","Whittington, Julia","Joslyn, Steve","Hague, Devon","Mitchell, Mark"],"dc:creator":["Moran, Clara Elizabeth"],"dc:date":["2017-09-29T16:39:08Z","2019-09-30T09:15:32Z","2017-06-12","2017-08"],"dc:description":["Objectives: A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: CT imaging of 20 adult New Zealand white rabbits was evaluated using 3-D multiplanar reconstruction, and safe corridors were determined. Following corridor determination, implant placement was performed, and imaging was repeated. Results: The cranial and caudal endplates contained the majority of the vertebral bone stock, and were an average of 3.14 and 3.30 mm in length, respectively. The mean safe corridor angle was 62.9 degrees (range 58.8-66.7), and the mean width of the corridor was 2.03 mm (1.60- 2.35). Post-placement imaging revealed that 35% of the pins demonstrated errors of placement, most commonly canal impingement. Conclusions: The results of the corridor evaluation indicate that an insertion angle of approximately 60 degrees relative to the sagittal midline is appropriate for implant insertion in the lumbar vertebrae of NZW rabbits. Additionally, due to the hourglass shape of rabbit vertebrae, the endplates provide maximal bone stock for implant purchase, so insertion should be attempted in these regions. However, the high percentage of errors in placement indicate the need to more clearly define entry points to access the canal, and highlight the challenges of appropriate placement in the small bones of rabbits.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2019-08-01","The student, Clara Moran, accepted the attached license on 2017-06-12 at 06:05.","The student, Clara Moran, submitted this Thesis for approval on 2017-06-12 at 06:14.","This Thesis was approved for publication on 2017-06-12 at 14:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11207 on 2017-09-29 at 11:13:35","Made available in DSpace on 2017-09-29T16:39:08Z (GMT). No. of bitstreams: 2 MORAN-THESIS-2017.pdf: 985242 bytes, checksum: b7197f915849599ae233afd62f2ea410 (MD5) LICENSE.txt: 4208 bytes, checksum: 1c938b6191a30034695fc2f132eb5aa1 (MD5) Previous issue date: 2017-06-12","Embargo set by: Colleen Fallaw for item 103376 Lift date: 2019-09-29T16:39:52Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Colleen Fallaw for item 103376 Lift date: 2019-09-29T17:52:45Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 103376 on 2019-09-30T09:15:32Z."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/98229"],"dc:language":["en"],"dc:rights":["Copyright 2017 Clara Moran"],"dc:subject":["Rabbit","Spinal"],"dc:title":["Computed tomography study of safe implantation corridors in rabbit vertebrae"],"dc:type":["text"],"thesis:degree_discipline":["VMS-Veterinary Clinical Medcne"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:35Z"}