Reliability of a portable device for quantifying tone and stiffness of quadriceps femoris and patellar tendon at different knee flexion angles

Guoqian Chen; Jiatao Wu; Guocai Chen; Yanyan Lu; Wei Ren; Wu Xu; Xuemeng Xu; Zugui Wu; Yingxin Guan; Yi Zheng; Bofan Qiu

doi:10.1371/journal.pone.0220521

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Open Access

Peer-reviewed

Research Article

Reliability of a portable device for quantifying tone and stiffness of quadriceps femoris and patellar tendon at different knee flexion angles

Guoqian Chen ,

Contributed equally to this work with: Guoqian Chen, Jiatao Wu

Roles Conceptualization, Writing – original draft, Writing – review & editing

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China

http://orcid.org/0000-0002-8684-3863

⨯
Jiatao Wu ,

Contributed equally to this work with: Guoqian Chen, Jiatao Wu

Roles Conceptualization, Data curation

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Guocai Chen,

Roles Formal analysis

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Yanyan Lu,

Roles Formal analysis, Software

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Wei Ren,

Roles Formal analysis

Affiliation Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong, China
⨯
Wu Xu,

Roles Formal analysis

Affiliation Orthopedics Department, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong, China
⨯
Xuemeng Xu ,

Roles Conceptualization, Methodology, Supervision, Writing – review & editing

* E-mail: xuxuemeng@163.com

Affiliation Orthopedics Department, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong, China
⨯
Zugui Wu,

Roles Data curation

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Yingxin Guan,

Roles Data curation

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Yi Zheng,

Roles Writing – original draft

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯
Bofan Qiu

Roles Writing – original draft

Affiliation Fifth Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
⨯

Reliability of a portable device for quantifying tone and stiffness of quadriceps femoris and patellar tendon at different knee flexion angles

Guoqian Chen,
Jiatao Wu,
Guocai Chen,
Yanyan Lu,
Wei Ren,
Wu Xu,
Xuemeng Xu,
Zugui Wu,
Yingxin Guan,
Yi Zheng

Published: July 31, 2019
https://doi.org/10.1371/journal.pone.0220521

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Stiffness
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Tendons
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