Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis
Objective To evaluate the placement feasibility and safety of the newly designed retropharyngeal reduction plate by cadaveric test and to perform morphometric trajectory analysis. Methods The five cadaveric specimens with intact atlantoaxial joint were enrolled in this study. They were used for simu...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | Orthopaedic Surgery |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/os.13217 |
| _version_ | 1818312849091461120 |
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| author | Jian‐yi Li Yu‐kun Du Zhao Meng Zheng Zhao Hui‐qiang Hu Jia‐le Shao Xiao‐jie Tang Wei‐qing Kong Tong‐shuai Xu Cheng Shao Yi‐xin Zhang Yong‐ming Xi |
| author_facet | Jian‐yi Li Yu‐kun Du Zhao Meng Zheng Zhao Hui‐qiang Hu Jia‐le Shao Xiao‐jie Tang Wei‐qing Kong Tong‐shuai Xu Cheng Shao Yi‐xin Zhang Yong‐ming Xi |
| author_sort | Jian‐yi Li |
| collection | DOAJ |
| description | Objective To evaluate the placement feasibility and safety of the newly designed retropharyngeal reduction plate by cadaveric test and to perform morphometric trajectory analysis. Methods The five cadaveric specimens with intact atlantoaxial joint were enrolled in this study. They were used for simulating the placement process and evaluating the placement feasibility of the retropharyngeal reduction plate. The atlantoaxial dislocation (AAD) of five cadaveric specimens were obtained by proper external force after dissecting ligaments. The retropharyngeal reduction plate was placed on atlantoaxial joint of cadaveric specimens. The X‐ray and three‐dimensional (3D) spiral CT were used for evaluating the placement safety of retropharyngeal reduction plate. The DICOM data was obtained after 3D spiral CT scanning for the morphometric trajectory analysis. Results The reduction plates were successfully placed on the atlantoaxial joint of five cadaveric specimens through the retropharyngeal approach, respectively. The X‐ray and 3D spiral CT showed the accurate screw implantation and satisfying plate placement. The length of the left/right atlas screw trajectory (L/RAT) was, respectively, 1.73 ± 0.01 cm (LAT) and 1.71 ± 0.02 cm (RAT). The length of odontoid screw trajectory (OST) was 1.38 ± 0.02 cm. The length of the left/right axis screw trajectory (L/RAXT) was, respectively, 1.67 ± 0.02 cm (LAXT) and 1.67 ± 0.01 cm (RAXT). There was no statistical significance between left side and right side in terms of AT and AXT (P > 0.05). The angles of atlas screw trajectory angle (ASTA), axis screw trajectory angle (AXSTA), and odontoid screw trajectory angle (OSTA) were 38.04° ± 2.03°, 56.92° ± 2.66°, and 34.78° ± 2.87°, respectively. Conclusion The cadaveric test showed that the retropharyngeal reduction plate is feasible to place on the atlantoaxial joint, which is also a safe treatment choice for atlantoaxial dislocation. The meticulous preoperative planning of screw trajectory based on individual differences was also vital to using this technique. |
| first_indexed | 2024-12-13T08:24:23Z |
| format | Article |
| id | doaj.art-b2556059f9e844cb896023035d21c9d8 |
| institution | Directory Open Access Journal |
| issn | 1757-7853 1757-7861 |
| language | English |
| last_indexed | 2024-12-13T08:24:23Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Orthopaedic Surgery |
| spelling | doaj.art-b2556059f9e844cb896023035d21c9d82022-12-21T23:53:56ZengWileyOrthopaedic Surgery1757-78531757-78612022-03-0114352252910.1111/os.13217Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory AnalysisJian‐yi Li0Yu‐kun Du1Zhao Meng2Zheng Zhao3Hui‐qiang Hu4Jia‐le Shao5Xiao‐jie Tang6Wei‐qing Kong7Tong‐shuai Xu8Cheng Shao9Yi‐xin Zhang10Yong‐ming Xi11Department of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Orthopaedics Children's Hospital of Hebei Province Shijiazhuang ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Health Care Ward III The Affiliated Hospital of Qingdao University Qingdao ChinaDepartment of Spinal Surgery The Affiliated Hospital of Qingdao University Qingdao ChinaObjective To evaluate the placement feasibility and safety of the newly designed retropharyngeal reduction plate by cadaveric test and to perform morphometric trajectory analysis. Methods The five cadaveric specimens with intact atlantoaxial joint were enrolled in this study. They were used for simulating the placement process and evaluating the placement feasibility of the retropharyngeal reduction plate. The atlantoaxial dislocation (AAD) of five cadaveric specimens were obtained by proper external force after dissecting ligaments. The retropharyngeal reduction plate was placed on atlantoaxial joint of cadaveric specimens. The X‐ray and three‐dimensional (3D) spiral CT were used for evaluating the placement safety of retropharyngeal reduction plate. The DICOM data was obtained after 3D spiral CT scanning for the morphometric trajectory analysis. Results The reduction plates were successfully placed on the atlantoaxial joint of five cadaveric specimens through the retropharyngeal approach, respectively. The X‐ray and 3D spiral CT showed the accurate screw implantation and satisfying plate placement. The length of the left/right atlas screw trajectory (L/RAT) was, respectively, 1.73 ± 0.01 cm (LAT) and 1.71 ± 0.02 cm (RAT). The length of odontoid screw trajectory (OST) was 1.38 ± 0.02 cm. The length of the left/right axis screw trajectory (L/RAXT) was, respectively, 1.67 ± 0.02 cm (LAXT) and 1.67 ± 0.01 cm (RAXT). There was no statistical significance between left side and right side in terms of AT and AXT (P > 0.05). The angles of atlas screw trajectory angle (ASTA), axis screw trajectory angle (AXSTA), and odontoid screw trajectory angle (OSTA) were 38.04° ± 2.03°, 56.92° ± 2.66°, and 34.78° ± 2.87°, respectively. Conclusion The cadaveric test showed that the retropharyngeal reduction plate is feasible to place on the atlantoaxial joint, which is also a safe treatment choice for atlantoaxial dislocation. The meticulous preoperative planning of screw trajectory based on individual differences was also vital to using this technique.https://doi.org/10.1111/os.13217Atlantoaxial dislocationCadaveric studyCraniovertebral junctionMorphometric trajectory analysisRetropharyngeal approach |
| spellingShingle | Jian‐yi Li Yu‐kun Du Zhao Meng Zheng Zhao Hui‐qiang Hu Jia‐le Shao Xiao‐jie Tang Wei‐qing Kong Tong‐shuai Xu Cheng Shao Yi‐xin Zhang Yong‐ming Xi Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis Orthopaedic Surgery Atlantoaxial dislocation Cadaveric study Craniovertebral junction Morphometric trajectory analysis Retropharyngeal approach |
| title | Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis |
| title_full | Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis |
| title_fullStr | Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis |
| title_full_unstemmed | Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis |
| title_short | Retropharyngeal Reduction Plate for Atlantoaxial Dislocation: A Cadaveric Test and Morphometric Trajectory Analysis |
| title_sort | retropharyngeal reduction plate for atlantoaxial dislocation a cadaveric test and morphometric trajectory analysis |
| topic | Atlantoaxial dislocation Cadaveric study Craniovertebral junction Morphometric trajectory analysis Retropharyngeal approach |
| url | https://doi.org/10.1111/os.13217 |
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