Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis
Adolescent idiopathic scoliosis (AIS), the most common pediatric musculoskeletal disorder, causes a three-dimensional spine deformity. Lenke type 5 AIS is defined as a structural thoracolumbar/lumbar curve with nonstructural thoracic curves. Although a rod curvature will affect clinical outcomes, in...
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Journal of Clinical Medicine |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0383/12/17/5750 |
| _version_ | 1797582235242594304 |
|---|---|
| author | Yoko Ishikawa Satoshi Kanai Katsuro Ura Terufumi Kokabu Katsuhisa Yamada Yuichiro Abe Hiroyuki Tachi Hisataka Suzuki Takashi Ohnishi Tsutomu Endo Daisuke Ukeba Masahiko Takahata Norimasa Iwasaki Hideki Sudo |
| author_facet | Yoko Ishikawa Satoshi Kanai Katsuro Ura Terufumi Kokabu Katsuhisa Yamada Yuichiro Abe Hiroyuki Tachi Hisataka Suzuki Takashi Ohnishi Tsutomu Endo Daisuke Ukeba Masahiko Takahata Norimasa Iwasaki Hideki Sudo |
| author_sort | Yoko Ishikawa |
| collection | DOAJ |
| description | Adolescent idiopathic scoliosis (AIS), the most common pediatric musculoskeletal disorder, causes a three-dimensional spine deformity. Lenke type 5 AIS is defined as a structural thoracolumbar/lumbar curve with nonstructural thoracic curves. Although a rod curvature will affect clinical outcomes, intraoperative contouring of the straight rod depends on the surgeon’s knowledge and experience. This study aimed to determine the optimum rod geometries to provide a pre-bent rod system for posterior spinal surgery in patients with Lenke type 5 AIS. These pre-bent rods will be beneficial for achieving proper postoperative outcomes without rod contouring based on surgeon experience. We investigated 20 rod geometries traced in posterior spinal reconstruction in patients with Lenke type 5 AIS. The differences between the center point clouds in each cluster were evaluated using the iterative closest point (ICP) method with modification. Before the evaluation using the ICP method, the point clouds were divided into four clusters based on the rod length using a hierarchical cluster analysis. Because the differences in the values derived from the ICP method were <5 mm for each length-based cluster, four representative rod shapes were generated from the length-based clusters. We identified four optimized rod shapes that will reduce operation time, leading to a decreased patient and surgeon burden. |
| first_indexed | 2024-03-10T23:19:13Z |
| format | Article |
| id | doaj.art-1d245e7c290f4adca56368e6f5c13047 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-10T23:19:13Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-1d245e7c290f4adca56368e6f5c130472023-11-19T08:24:51ZengMDPI AGJournal of Clinical Medicine2077-03832023-09-011217575010.3390/jcm12175750Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic ScoliosisYoko Ishikawa0Satoshi Kanai1Katsuro Ura2Terufumi Kokabu3Katsuhisa Yamada4Yuichiro Abe5Hiroyuki Tachi6Hisataka Suzuki7Takashi Ohnishi8Tsutomu Endo9Daisuke Ukeba10Masahiko Takahata11Norimasa Iwasaki12Hideki Sudo13Department of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDivision of Systems Science and Informatics, Hokkaido University Graduate School of Information Science and Technology, N14W9, Sapporo 060-0814, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Eniwa Hospital, 2-1-1 Kogane-Chuo, Eniwa 061-1449, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanDepartment of Orthopaedic Surgery, Hokkaido University Hospital, N15W7, Sapporo 060-8638, Hokkaido, JapanAdolescent idiopathic scoliosis (AIS), the most common pediatric musculoskeletal disorder, causes a three-dimensional spine deformity. Lenke type 5 AIS is defined as a structural thoracolumbar/lumbar curve with nonstructural thoracic curves. Although a rod curvature will affect clinical outcomes, intraoperative contouring of the straight rod depends on the surgeon’s knowledge and experience. This study aimed to determine the optimum rod geometries to provide a pre-bent rod system for posterior spinal surgery in patients with Lenke type 5 AIS. These pre-bent rods will be beneficial for achieving proper postoperative outcomes without rod contouring based on surgeon experience. We investigated 20 rod geometries traced in posterior spinal reconstruction in patients with Lenke type 5 AIS. The differences between the center point clouds in each cluster were evaluated using the iterative closest point (ICP) method with modification. Before the evaluation using the ICP method, the point clouds were divided into four clusters based on the rod length using a hierarchical cluster analysis. Because the differences in the values derived from the ICP method were <5 mm for each length-based cluster, four representative rod shapes were generated from the length-based clusters. We identified four optimized rod shapes that will reduce operation time, leading to a decreased patient and surgeon burden.https://www.mdpi.com/2077-0383/12/17/5750adolescent idiopathic scoliosisthoracolumbar/lumbar curvepre-bent roditerative closest point method |
| spellingShingle | Yoko Ishikawa Satoshi Kanai Katsuro Ura Terufumi Kokabu Katsuhisa Yamada Yuichiro Abe Hiroyuki Tachi Hisataka Suzuki Takashi Ohnishi Tsutomu Endo Daisuke Ukeba Masahiko Takahata Norimasa Iwasaki Hideki Sudo Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis Journal of Clinical Medicine adolescent idiopathic scoliosis thoracolumbar/lumbar curve pre-bent rod iterative closest point method |
| title | Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis |
| title_full | Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis |
| title_fullStr | Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis |
| title_full_unstemmed | Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis |
| title_short | Development of Notch-Free, Pre-Bent Rod Applicable for Posterior Corrective Surgery of Thoracolumbar/Lumbar Adolescent Idiopathic Scoliosis |
| title_sort | development of notch free pre bent rod applicable for posterior corrective surgery of thoracolumbar lumbar adolescent idiopathic scoliosis |
| topic | adolescent idiopathic scoliosis thoracolumbar/lumbar curve pre-bent rod iterative closest point method |
| url | https://www.mdpi.com/2077-0383/12/17/5750 |
| work_keys_str_mv | AT yokoishikawa developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT satoshikanai developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT katsuroura developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT terufumikokabu developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT katsuhisayamada developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT yuichiroabe developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT hiroyukitachi developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT hisatakasuzuki developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT takashiohnishi developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT tsutomuendo developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT daisukeukeba developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT masahikotakahata developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT norimasaiwasaki developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis AT hidekisudo developmentofnotchfreeprebentrodapplicableforposteriorcorrectivesurgeryofthoracolumbarlumbaradolescentidiopathicscoliosis |