What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis

Introduction: To analyze the extent to which various types of orthoses can restrict motion of the lumbar spine and provide basic evidence regarding the optimal orthosis for conservative treatment of lumbar spondylolysis (LS), particularly. Although several orthoses have been developed and applied fo...

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Main Authors: Yosuke Fujimoto, Toshinori Sakai, Koichi Sairyo
Format: Article
Language:English
Published: The Japanese Society for Spine Surgery and Related Research 2020-01-01
Series:Spine Surgery and Related Research
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/ssrr/4/1/4_2019-0018/_pdf/-char/en
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author Yosuke Fujimoto
Toshinori Sakai
Koichi Sairyo
author_facet Yosuke Fujimoto
Toshinori Sakai
Koichi Sairyo
author_sort Yosuke Fujimoto
collection DOAJ
description Introduction: To analyze the extent to which various types of orthoses can restrict motion of the lumbar spine and provide basic evidence regarding the optimal orthosis for conservative treatment of lumbar spondylolysis (LS), particularly. Although several orthoses have been developed and applied for LS with better outcomes for bony healing, basic data regarding which is optimal are still lacking. Methods: Ten healthy voluntary participants were included in this study. Lumbar spine range of motion (ROM) was analyzed using a three-dimensional motion capture system (NEXUS 2.2, Vicon Motion Systems Ltd., UK) under five conditions wearing no orthosis (NB) and four types of lumbar-sacral orthoses (LSO): custom-made hard LSO (HO), soft LSO supported by four aluminum stays and a custom-molded back cast-panel named “Return to Sports” braces (RS), custom-made soft LSO known as Damen type elasticity corset (DC), and off-the-shelf soft LSO. Results: HO showed the highest restriction of motion in all directions than the others. Especially, ROM of rotation and side bending were reduced to 58.3% and 63.6% compared with NB, respectively. The other three LSOs showed significantly higher restriction in extension, rotation, and side bending than NB. In flexion and side bending, DC showed significantly higher restriction than NB. Conclusions: HO showed high restriction in all directions. RS showed higher restriction in extension than NB and less restriction in flexion and side bending than other custom-made LSOs. DC was the only soft LSO showing higher restriction than NB in flexion.
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spelling doaj.art-982c0265af364571a461d4464be2cf232022-12-21T23:19:38ZengThe Japanese Society for Spine Surgery and Related ResearchSpine Surgery and Related Research2432-261X2020-01-0141748010.22603/ssrr.2019-00182019-0018What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical AnalysisYosuke Fujimoto0Toshinori Sakai1Koichi Sairyo2Fujimoto Prosthesis and Orthosis Supply Co. Ltd.Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate SchoolDepartment of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate SchoolIntroduction: To analyze the extent to which various types of orthoses can restrict motion of the lumbar spine and provide basic evidence regarding the optimal orthosis for conservative treatment of lumbar spondylolysis (LS), particularly. Although several orthoses have been developed and applied for LS with better outcomes for bony healing, basic data regarding which is optimal are still lacking. Methods: Ten healthy voluntary participants were included in this study. Lumbar spine range of motion (ROM) was analyzed using a three-dimensional motion capture system (NEXUS 2.2, Vicon Motion Systems Ltd., UK) under five conditions wearing no orthosis (NB) and four types of lumbar-sacral orthoses (LSO): custom-made hard LSO (HO), soft LSO supported by four aluminum stays and a custom-molded back cast-panel named “Return to Sports” braces (RS), custom-made soft LSO known as Damen type elasticity corset (DC), and off-the-shelf soft LSO. Results: HO showed the highest restriction of motion in all directions than the others. Especially, ROM of rotation and side bending were reduced to 58.3% and 63.6% compared with NB, respectively. The other three LSOs showed significantly higher restriction in extension, rotation, and side bending than NB. In flexion and side bending, DC showed significantly higher restriction than NB. Conclusions: HO showed high restriction in all directions. RS showed higher restriction in extension than NB and less restriction in flexion and side bending than other custom-made LSOs. DC was the only soft LSO showing higher restriction than NB in flexion.https://www.jstage.jst.go.jp/article/ssrr/4/1/4_2019-0018/_pdf/-char/enorthosislumbar spondylolysisstress fractureconservative treatment
spellingShingle Yosuke Fujimoto
Toshinori Sakai
Koichi Sairyo
What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
Spine Surgery and Related Research
orthosis
lumbar spondylolysis
stress fracture
conservative treatment
title What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
title_full What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
title_fullStr What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
title_full_unstemmed What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
title_short What Type of Orthosis is Optimal for Conservative Treatment of Lumbar Spondylolysis?: A Biomechanical Analysis
title_sort what type of orthosis is optimal for conservative treatment of lumbar spondylolysis a biomechanical analysis
topic orthosis
lumbar spondylolysis
stress fracture
conservative treatment
url https://www.jstage.jst.go.jp/article/ssrr/4/1/4_2019-0018/_pdf/-char/en
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AT toshinorisakai whattypeoforthosisisoptimalforconservativetreatmentoflumbarspondylolysisabiomechanicalanalysis
AT koichisairyo whattypeoforthosisisoptimalforconservativetreatmentoflumbarspondylolysisabiomechanicalanalysis