Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine
ObjectivesCompared with traditional pedicle screw trajectory, cortical bone trajectory (CBT) increases the contact surface between the screw and cortical bone where the screw is surrounded by dense cortical bone, which does not deform remarkably due to degeneration. We aimed to provide detailed info...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Surgery |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsurg.2022.1028276/full |
| _version_ | 1811255528738783232 |
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| author | Wenjie Shi Mijiti Aini Limin Dang Alafate Kahaer Zhihao Zhou Yixi Wang Abulikemu Maimaiti Shuiquan Wang Hailong Guo Paerhati Rexiti |
| author_facet | Wenjie Shi Mijiti Aini Limin Dang Alafate Kahaer Zhihao Zhou Yixi Wang Abulikemu Maimaiti Shuiquan Wang Hailong Guo Paerhati Rexiti |
| author_sort | Wenjie Shi |
| collection | DOAJ |
| description | ObjectivesCompared with traditional pedicle screw trajectory, cortical bone trajectory (CBT) increases the contact surface between the screw and cortical bone where the screw is surrounded by dense cortical bone, which does not deform remarkably due to degeneration. We aimed to provide detailed information about the improvement of three-dimensional (3D)-printed navigation templates for modified CBT screw placement in the lumbar spine and evaluate the safety and accuracy thereof.MethodsFour human cadaveric lumbar spine specimens were selected. After CT scanning data were reconstructed to 3D models, either the left or right side of each specimen was randomly selected to establish a 3D-navigation template, mutually complemented with the surface anatomical structure of the lateral margin of the lumbar isthmus, vertebral plate, and spinous process. The corresponding 3D centrum was printed according to the CT scanning data, and a navigation template of supporting design was made according to modified cortical bone technique. The same template was used to insert CBT screws into 3D printed and cadaveric specimens. After the screws were inserted, the screw path of the 3D printed specimens was directly observed, and that of the anatomical specimens was scanned by CT, to determine the position and direction of the screws to analyze the success rate of screw placement.ResultsTwenty cortical bone screws were placed in each of the 3D printed and anatomical specimens, with excellent rates of screw placement of 100% and 95%, respectively.ConclusionsWe report the easy, safe, accurate, and reliable use of a 3D-printed navigation template to carry out screw placement by modified cortical bone technique in the lumbar spine. |
| first_indexed | 2024-04-12T17:26:10Z |
| format | Article |
| id | doaj.art-4a0a2ffd7daf4ecb9ac40108f3340fa2 |
| institution | Directory Open Access Journal |
| issn | 2296-875X |
| language | English |
| last_indexed | 2024-04-12T17:26:10Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Surgery |
| spelling | doaj.art-4a0a2ffd7daf4ecb9ac40108f3340fa22022-12-22T03:23:18ZengFrontiers Media S.A.Frontiers in Surgery2296-875X2022-11-01910.3389/fsurg.2022.10282761028276Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spineWenjie Shi0Mijiti Aini1Limin Dang2Alafate Kahaer3Zhihao Zhou4Yixi Wang5Abulikemu Maimaiti6Shuiquan Wang7Hailong Guo8Paerhati Rexiti9Xinjiang Uygur Autonomous Region, Xinjiang Medical University, Urumqi, ChinaDepartment of Orthopedics Second People's Hospital Kashgar District, Xinjiang Uygur Autonomous Region, Kashgar City, ChinaXinjiang Uygur Autonomous Region, Xinjiang Medical University, Urumqi, ChinaDepartment of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaDepartment of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaXinjiang Uygur Autonomous Region, Xinjiang Medical University, Urumqi, ChinaDepartment of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaDepartment of Anatomy, College of Basic Medicine, Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaDepartment of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaDepartment of Spine Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Urumqi, ChinaObjectivesCompared with traditional pedicle screw trajectory, cortical bone trajectory (CBT) increases the contact surface between the screw and cortical bone where the screw is surrounded by dense cortical bone, which does not deform remarkably due to degeneration. We aimed to provide detailed information about the improvement of three-dimensional (3D)-printed navigation templates for modified CBT screw placement in the lumbar spine and evaluate the safety and accuracy thereof.MethodsFour human cadaveric lumbar spine specimens were selected. After CT scanning data were reconstructed to 3D models, either the left or right side of each specimen was randomly selected to establish a 3D-navigation template, mutually complemented with the surface anatomical structure of the lateral margin of the lumbar isthmus, vertebral plate, and spinous process. The corresponding 3D centrum was printed according to the CT scanning data, and a navigation template of supporting design was made according to modified cortical bone technique. The same template was used to insert CBT screws into 3D printed and cadaveric specimens. After the screws were inserted, the screw path of the 3D printed specimens was directly observed, and that of the anatomical specimens was scanned by CT, to determine the position and direction of the screws to analyze the success rate of screw placement.ResultsTwenty cortical bone screws were placed in each of the 3D printed and anatomical specimens, with excellent rates of screw placement of 100% and 95%, respectively.ConclusionsWe report the easy, safe, accurate, and reliable use of a 3D-printed navigation template to carry out screw placement by modified cortical bone technique in the lumbar spine.https://www.frontiersin.org/articles/10.3389/fsurg.2022.1028276/fullspine implantslumbar vertebra3D printingreverse engineeringcortical bone trajectory3D navigation template |
| spellingShingle | Wenjie Shi Mijiti Aini Limin Dang Alafate Kahaer Zhihao Zhou Yixi Wang Abulikemu Maimaiti Shuiquan Wang Hailong Guo Paerhati Rexiti Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine Frontiers in Surgery spine implants lumbar vertebra 3D printing reverse engineering cortical bone trajectory 3D navigation template |
| title | Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| title_full | Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| title_fullStr | Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| title_full_unstemmed | Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| title_short | Feasibility and improvement of a three-dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| title_sort | feasibility and improvement of a three dimensional printed navigation template for modified cortical bone trajectory screw placement in the lumbar spine |
| topic | spine implants lumbar vertebra 3D printing reverse engineering cortical bone trajectory 3D navigation template |
| url | https://www.frontiersin.org/articles/10.3389/fsurg.2022.1028276/full |
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