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Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis

Congenital muscular torticollis (CMT) results from unilateral shortening of the sternocleidomastoid (SCM) muscle, usually associated with a fibrotic mass. Although CMT may resolve with physical therapy, some cases persist, resulting in long-term musculoskeletal problems. It is therefore helpful to b...

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Autores principales: Hwang, Dongmin, Shin, Young Ju, Choi, Ja Young, Jung, Soo Jin, Yang, Shin-seung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6963363/
https://www.ncbi.nlm.nih.gov/pubmed/31652674
http://dx.doi.org/10.3390/diagnostics9040158
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author Hwang, Dongmin
Shin, Young Ju
Choi, Ja Young
Jung, Soo Jin
Yang, Shin-seung
author_facet Hwang, Dongmin
Shin, Young Ju
Choi, Ja Young
Jung, Soo Jin
Yang, Shin-seung
author_sort Hwang, Dongmin
collection PubMed
description Congenital muscular torticollis (CMT) results from unilateral shortening of the sternocleidomastoid (SCM) muscle, usually associated with a fibrotic mass. Although CMT may resolve with physical therapy, some cases persist, resulting in long-term musculoskeletal problems. It is therefore helpful to be able to monitor and predict the outcomes of physical therapy. Shear-wave velocity (SWV) determined by acoustic radiation force impulse (ARFI) elastography can provide a quantitative measure of muscle stiffness. We therefore measured SCM SWV in 22 infants with unilateral CMT before and after 3 months of physical therapy and evaluated the relationships between SWV and SCM thickness and various clinical features, including cervical range of motion (ROM). SWV was initially higher and the ROM was smaller in affected muscles before physical therapy. SWV decreased significantly (2.33 ± 0.47 to 1.56 ± 0.63 m/s, p < 0.001), indicating reduced stiffness, and muscle thickness also decreased after physical therapy (15.64 ± 5.24 to 11.36 ± 5.71 mm, p < 0.001), both in line with increased neck ROM of rotation (64.77 ± 18.87 to 87.27 ± 6.31°, p < 0.001) and lateral flexion (37.50 ± 11.31 to 53.64 ± 9.41°, p < 0.001). However, the improved ROM more closely reflected the changes in SWV than in muscle thickness. These results suggest that a change in SWV detected by ARFI elastography could help to predict improvements in clinical outcomes, such as stiffness-related loss of motion, in patients with CMT undergoing physical therapy.
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spelling pubmed-69633632020-02-26 Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis Hwang, Dongmin Shin, Young Ju Choi, Ja Young Jung, Soo Jin Yang, Shin-seung Diagnostics (Basel) Article Congenital muscular torticollis (CMT) results from unilateral shortening of the sternocleidomastoid (SCM) muscle, usually associated with a fibrotic mass. Although CMT may resolve with physical therapy, some cases persist, resulting in long-term musculoskeletal problems. It is therefore helpful to be able to monitor and predict the outcomes of physical therapy. Shear-wave velocity (SWV) determined by acoustic radiation force impulse (ARFI) elastography can provide a quantitative measure of muscle stiffness. We therefore measured SCM SWV in 22 infants with unilateral CMT before and after 3 months of physical therapy and evaluated the relationships between SWV and SCM thickness and various clinical features, including cervical range of motion (ROM). SWV was initially higher and the ROM was smaller in affected muscles before physical therapy. SWV decreased significantly (2.33 ± 0.47 to 1.56 ± 0.63 m/s, p < 0.001), indicating reduced stiffness, and muscle thickness also decreased after physical therapy (15.64 ± 5.24 to 11.36 ± 5.71 mm, p < 0.001), both in line with increased neck ROM of rotation (64.77 ± 18.87 to 87.27 ± 6.31°, p < 0.001) and lateral flexion (37.50 ± 11.31 to 53.64 ± 9.41°, p < 0.001). However, the improved ROM more closely reflected the changes in SWV than in muscle thickness. These results suggest that a change in SWV detected by ARFI elastography could help to predict improvements in clinical outcomes, such as stiffness-related loss of motion, in patients with CMT undergoing physical therapy. MDPI 2019-10-23 /pmc/articles/PMC6963363/ /pubmed/31652674 http://dx.doi.org/10.3390/diagnostics9040158 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hwang, Dongmin
Shin, Young Ju
Choi, Ja Young
Jung, Soo Jin
Yang, Shin-seung
Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title_full Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title_fullStr Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title_full_unstemmed Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title_short Changes in Muscle Stiffness in Infants with Congenital Muscular Torticollis
title_sort changes in muscle stiffness in infants with congenital muscular torticollis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6963363/
https://www.ncbi.nlm.nih.gov/pubmed/31652674
http://dx.doi.org/10.3390/diagnostics9040158
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