Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system

Abstract In patients with dropped head syndrome (DHS), cervical malalignment is one of the risk factors for impaired horizontal gaze and restrictions to ambulation. The characteristics of gait in patients with DHS have not been clarified biomechanically from the viewpoint of dynamic alignment and lo...

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Autores principales:	Tatsuya Igawa, Ken Ishii, Akifumi Suzuki, Hideto Ui, Ryunosuke Urata, Norihiro Isogai, Yutaka Sasao, Makoto Nishiyama, Haruki Funao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/21a1ecf3482d4ae59b7fb125ee611bd0
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spelling	oai:doaj.org-article:21a1ecf3482d4ae59b7fb125ee611bd02021-12-02T15:15:45ZDynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system10.1038/s41598-021-97329-w2045-2322https://doaj.org/article/21a1ecf3482d4ae59b7fb125ee611bd02021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97329-whttps://doaj.org/toc/2045-2322Abstract In patients with dropped head syndrome (DHS), cervical malalignment is one of the risk factors for impaired horizontal gaze and restrictions to ambulation. The characteristics of gait in patients with DHS have not been clarified biomechanically from the viewpoint of dynamic alignment and lower limb kinematics. This study aimed to clarify kinematic and kinetic differences during level walking in patients with DHS compared to the healthy elderly. Twelve patients with DHS and healthy elderly individuals performed level walking at a self-selected speed. Spatiotemporal, kinematic, and kinetic data were recorded using a three-dimensional motion analysis system. Statistical analysis was performed to compare these data between the two groups, respectively. Compared with the healthy elderly, stride length and peak hip-joint extension angle in patients with DHS were significantly shorter and smaller. The thorax was also significantly tilted backwards. Peak ankle-joint plantar-flexion moment was significantly smaller despite larger dorsiflexion angle compared with the healthy elderly. The walking of DHS patients demonstrated kinematic and kinetic characteristics of the lower limb joints and alignment of the thorax and pelvis corresponding to their short stride and walking speed.Tatsuya IgawaKen IshiiAkifumi SuzukiHideto UiRyunosuke UrataNorihiro IsogaiYutaka SasaoMakoto NishiyamaHaruki FunaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tatsuya Igawa Ken Ishii Akifumi Suzuki Hideto Ui Ryunosuke Urata Norihiro Isogai Yutaka Sasao Makoto Nishiyama Haruki Funao Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
description	Abstract In patients with dropped head syndrome (DHS), cervical malalignment is one of the risk factors for impaired horizontal gaze and restrictions to ambulation. The characteristics of gait in patients with DHS have not been clarified biomechanically from the viewpoint of dynamic alignment and lower limb kinematics. This study aimed to clarify kinematic and kinetic differences during level walking in patients with DHS compared to the healthy elderly. Twelve patients with DHS and healthy elderly individuals performed level walking at a self-selected speed. Spatiotemporal, kinematic, and kinetic data were recorded using a three-dimensional motion analysis system. Statistical analysis was performed to compare these data between the two groups, respectively. Compared with the healthy elderly, stride length and peak hip-joint extension angle in patients with DHS were significantly shorter and smaller. The thorax was also significantly tilted backwards. Peak ankle-joint plantar-flexion moment was significantly smaller despite larger dorsiflexion angle compared with the healthy elderly. The walking of DHS patients demonstrated kinematic and kinetic characteristics of the lower limb joints and alignment of the thorax and pelvis corresponding to their short stride and walking speed.
format	article
author	Tatsuya Igawa Ken Ishii Akifumi Suzuki Hideto Ui Ryunosuke Urata Norihiro Isogai Yutaka Sasao Makoto Nishiyama Haruki Funao
author_facet	Tatsuya Igawa Ken Ishii Akifumi Suzuki Hideto Ui Ryunosuke Urata Norihiro Isogai Yutaka Sasao Makoto Nishiyama Haruki Funao
author_sort	Tatsuya Igawa
title	Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
title_short	Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
title_full	Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
title_fullStr	Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
title_full_unstemmed	Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
title_sort	dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/21a1ecf3482d4ae59b7fb125ee611bd0
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Dynamic alignment changes during level walking in patients with dropped head syndrome: analyses using a three-dimensional motion analysis system

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