In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis

Abstract Some surgical strategies can maintain or restore thoracic kyphosis (TK); however, next-generation surgical schemes for adolescent idiopathic scoliosis (AIS) should consider anatomical corrections. A four-dimensional correction could be actively achieved by curving the rod. Thus, anatomicall...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hideki Sudo, Hiroyuki Tachi, Terufumi Kokabu, Katsuhisa Yamada, Akira Iwata, Tsutomu Endo, Masahiko Takahata, Yuichiro Abe, Norimasa Iwasaki
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fe67ead347d946deb2904cd913e1a898
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fe67ead347d946deb2904cd913e1a898
record_format	dspace
spelling	oai:doaj.org-article:fe67ead347d946deb2904cd913e1a8982021-12-02T17:41:26ZIn vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis10.1038/s41598-021-92187-y2045-2322https://doaj.org/article/fe67ead347d946deb2904cd913e1a8982021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92187-yhttps://doaj.org/toc/2045-2322Abstract Some surgical strategies can maintain or restore thoracic kyphosis (TK); however, next-generation surgical schemes for adolescent idiopathic scoliosis (AIS) should consider anatomical corrections. A four-dimensional correction could be actively achieved by curving the rod. Thus, anatomically designed rods have been developed as notch-free, pre-bent rods for easier anatomical reconstruction. This study aimed to compare the initial curve corrections obtained using notch-free rods and manually bent, notched rods for the anatomical reconstruction of thoracic AIS. Two consecutive series of 60 patients who underwent anatomical posterior correction for main thoracic AIS curves were prospectively followed up. After multilevel facetectomy, except for the lowest instrumented segment, either notch-free or notched rods were used. Patient demographic data, radiographic measurements, and sagittal rod angles were analyzed within 1 week after surgery. Patients with notch-free rods had significantly higher postoperative TK than patients with notched rods (P < .001), but both groups achieved three-dimensional spinal corrections and significantly increased postoperative rates of patients with T6–T8 TK apex (P = .006 for notch-free rods and P = .008 for notched rods). The rod deformation angle at the concave side was significantly lower in the notch-free rods than in the notched rods (P < .001). The notch-free, pre-bent rod can maintain its curvature, leading to better correction or maintenance of TK after anatomical spinal correction surgery than the conventional notched rod. These results suggest the potential benefits of anatomically designed notch-free, pre-bent rods over conventional, manually bent rods.Hideki SudoHiroyuki TachiTerufumi KokabuKatsuhisa YamadaAkira IwataTsutomu EndoMasahiko TakahataYuichiro AbeNorimasa IwasakiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hideki Sudo Hiroyuki Tachi Terufumi Kokabu Katsuhisa Yamada Akira Iwata Tsutomu Endo Masahiko Takahata Yuichiro Abe Norimasa Iwasaki In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
description	Abstract Some surgical strategies can maintain or restore thoracic kyphosis (TK); however, next-generation surgical schemes for adolescent idiopathic scoliosis (AIS) should consider anatomical corrections. A four-dimensional correction could be actively achieved by curving the rod. Thus, anatomically designed rods have been developed as notch-free, pre-bent rods for easier anatomical reconstruction. This study aimed to compare the initial curve corrections obtained using notch-free rods and manually bent, notched rods for the anatomical reconstruction of thoracic AIS. Two consecutive series of 60 patients who underwent anatomical posterior correction for main thoracic AIS curves were prospectively followed up. After multilevel facetectomy, except for the lowest instrumented segment, either notch-free or notched rods were used. Patient demographic data, radiographic measurements, and sagittal rod angles were analyzed within 1 week after surgery. Patients with notch-free rods had significantly higher postoperative TK than patients with notched rods (P < .001), but both groups achieved three-dimensional spinal corrections and significantly increased postoperative rates of patients with T6–T8 TK apex (P = .006 for notch-free rods and P = .008 for notched rods). The rod deformation angle at the concave side was significantly lower in the notch-free rods than in the notched rods (P < .001). The notch-free, pre-bent rod can maintain its curvature, leading to better correction or maintenance of TK after anatomical spinal correction surgery than the conventional notched rod. These results suggest the potential benefits of anatomically designed notch-free, pre-bent rods over conventional, manually bent rods.
format	article
author	Hideki Sudo Hiroyuki Tachi Terufumi Kokabu Katsuhisa Yamada Akira Iwata Tsutomu Endo Masahiko Takahata Yuichiro Abe Norimasa Iwasaki
author_facet	Hideki Sudo Hiroyuki Tachi Terufumi Kokabu Katsuhisa Yamada Akira Iwata Tsutomu Endo Masahiko Takahata Yuichiro Abe Norimasa Iwasaki
author_sort	Hideki Sudo
title	In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
title_short	In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
title_full	In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
title_fullStr	In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
title_full_unstemmed	In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
title_sort	in vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fe67ead347d946deb2904cd913e1a898
work_keys_str_mv	AT hidekisudo invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT hiroyukitachi invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT terufumikokabu invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT katsuhisayamada invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT akiraiwata invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT tsutomuendo invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT masahikotakahata invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT yuichiroabe invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis AT norimasaiwasaki invivodeformationofanatomicallyprebentrodsinthoracicadolescentidiopathicscoliosis
_version_	1718379743295832064

In vivo deformation of anatomically pre-bent rods in thoracic adolescent idiopathic scoliosis

Ejemplares similares