The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis

Background Data: The selection of the lower instrumented vertebra (LIV) in single thoracic (Lenke1A and B) Adolescent Idiopathic Scoliosis (AIS) remains controversial. Purpose: To report a new method of selecting the LIV and report the results of surgery based upon this method. Study Design: Retrosp...

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Autor principal:	Hossam Taha
Formato:	article
Lenguaje:	EN
Publicado:	Egyptian Spine Association 2012
Materias:	single thoracic idiopathic scoliosis left bending stable vertebra fusion level lower instrumented vertebra Lenke I Pedicle screw fixation Neurology. Diseases of the nervous system RC346-429
Acceso en línea:	https://doaj.org/article/d86fbbf70d8d4333a56674321d1571b9
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spelling	oai:doaj.org-article:d86fbbf70d8d4333a56674321d1571b92021-12-02T01:47:47ZThe Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic ScoliosisDOI:10.21608/ESJ.2012.37912314-89502314-8969https://doaj.org/article/d86fbbf70d8d4333a56674321d1571b92012-07-01T00:00:00Zhttp://esj.journals.ekb.eg/article_3791.htmlhttps://doaj.org/toc/2314-8950https://doaj.org/toc/2314-8969Background Data: The selection of the lower instrumented vertebra (LIV) in single thoracic (Lenke1A and B) Adolescent Idiopathic Scoliosis (AIS) remains controversial. Purpose: To report a new method of selecting the LIV and report the results of surgery based upon this method. Study Design: Retrospective radiological analysis of Lenke 1A and B AIS patients. Patients and Methods: Fifty six patients met the inclusion criteria, 4 (7.1%) male and 52 (92.9%) females. Mean age at time of surgery was 14.7 years. The following data were recorded on preoperative, immediate postoperative and latest follow up x-rays: the lower end vertebra (EV), the stable vertebra (SV), the neutral vertebra (NV), the vertebra most closely bisected by a central sacral perpendicular line that was designated the left bending stable vertebra (LBSV) and the lower instrumented vertebra (LIV). Patients were checked for coronal balance and the development of adding on the latest follow up X-rays. Results: Patients were followed up for a mean of 28.5 months. Mean thoracic curve correction was 69%. Five patients (9%) developed adding on at their latest follow up. All patients instrumented at or distal to the LBSV were balanced without adding on. Five out of the six patients (83%) instrumented proximal to the LBSV developed adding on at their latest follow up. Conclusion: The LBSV is a useful and reliable way of determining the LIV in Lenke 1A and B AIS. Both the LBSV and Suk et al method predicted adding on; however, the LBSV can allow a more proximal LIV and therefore a shorter fusion in up to 46% of this case series. (2012ESJ022) Hossam TahaEgyptian Spine Associationarticlesingle thoracic idiopathic scoliosisleft bending stable vertebrafusion levellower instrumented vertebraLenke IPedicle screw fixationNeurology. Diseases of the nervous systemRC346-429ENEgyptian Spine Journal, Vol 3, Iss 1, Pp 35-40 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	single thoracic idiopathic scoliosis left bending stable vertebra fusion level lower instrumented vertebra Lenke I Pedicle screw fixation Neurology. Diseases of the nervous system RC346-429
spellingShingle	single thoracic idiopathic scoliosis left bending stable vertebra fusion level lower instrumented vertebra Lenke I Pedicle screw fixation Neurology. Diseases of the nervous system RC346-429 Hossam Taha The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
description	Background Data: The selection of the lower instrumented vertebra (LIV) in single thoracic (Lenke1A and B) Adolescent Idiopathic Scoliosis (AIS) remains controversial. Purpose: To report a new method of selecting the LIV and report the results of surgery based upon this method. Study Design: Retrospective radiological analysis of Lenke 1A and B AIS patients. Patients and Methods: Fifty six patients met the inclusion criteria, 4 (7.1%) male and 52 (92.9%) females. Mean age at time of surgery was 14.7 years. The following data were recorded on preoperative, immediate postoperative and latest follow up x-rays: the lower end vertebra (EV), the stable vertebra (SV), the neutral vertebra (NV), the vertebra most closely bisected by a central sacral perpendicular line that was designated the left bending stable vertebra (LBSV) and the lower instrumented vertebra (LIV). Patients were checked for coronal balance and the development of adding on the latest follow up X-rays. Results: Patients were followed up for a mean of 28.5 months. Mean thoracic curve correction was 69%. Five patients (9%) developed adding on at their latest follow up. All patients instrumented at or distal to the LBSV were balanced without adding on. Five out of the six patients (83%) instrumented proximal to the LBSV developed adding on at their latest follow up. Conclusion: The LBSV is a useful and reliable way of determining the LIV in Lenke 1A and B AIS. Both the LBSV and Suk et al method predicted adding on; however, the LBSV can allow a more proximal LIV and therefore a shorter fusion in up to 46% of this case series. (2012ESJ022)
format	article
author	Hossam Taha
author_facet	Hossam Taha
author_sort	Hossam Taha
title	The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
title_short	The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
title_full	The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
title_fullStr	The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
title_full_unstemmed	The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis
title_sort	left bending stable vertebra; a method for determining the lower instrumented vertebra in single thoracic (lenke ia and ib) adolescent idiopathic scoliosis
publisher	Egyptian Spine Association
publishDate	2012
url	https://doaj.org/article/d86fbbf70d8d4333a56674321d1571b9
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The Left Bending Stable Vertebra; A Method for Determining the Lower Instrumented Vertebra in Single Thoracic (Lenke IA and IB) Adolescent Idiopathic Scoliosis

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