Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly?
Objectives/Hypothesis This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans. Study Design Cadaveric anatomic dissections. Methods One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morp...
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| Veröffentlicht in: | The Laryngoscope 2018-07, Vol.128 (7), p.1634-1638 |
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| container_title | The Laryngoscope |
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| creator | Lee, Shin‐Hyo Koh, Ki‐Seok Song, Wu‐Chul |
| description | Objectives/Hypothesis
This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans.
Study Design
Cadaveric anatomic dissections.
Methods
One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle.
Results
Thirty‐six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle. In 28 cases, the belly had a relatively constant origin and an insertion that extended straight onto the TA muscle from the anterosuperior area of the internal surface of the thyroid lamina to the base of the muscular process of the arytenoid cartilage. Eight cases were located in a similar area but with some differences in the origin or insertion features.
Conclusions
We proposed that the oblique TA muscle has a high prevalence and probably acts to close and relax the vocal cords. It remains to be determined whether the oblique TA muscle is an independent muscle or an accessory belly of the main TA muscle.
Level of Evidence
NA. Laryngoscope, 128:1634–1638, 2018 |
| doi_str_mv | 10.1002/lary.27090 |
| format | Article |
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This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans.
Study Design
Cadaveric anatomic dissections.
Methods
One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle.
Results
Thirty‐six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle. In 28 cases, the belly had a relatively constant origin and an insertion that extended straight onto the TA muscle from the anterosuperior area of the internal surface of the thyroid lamina to the base of the muscular process of the arytenoid cartilage. Eight cases were located in a similar area but with some differences in the origin or insertion features.
Conclusions
We proposed that the oblique TA muscle has a high prevalence and probably acts to close and relax the vocal cords. It remains to be determined whether the oblique TA muscle is an independent muscle or an accessory belly of the main TA muscle.
Level of Evidence
NA. Laryngoscope, 128:1634–1638, 2018</description><identifier>ISSN: 0023-852X</identifier><identifier>EISSN: 1531-4995</identifier><identifier>DOI: 10.1002/lary.27090</identifier><identifier>PMID: 29332305</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>Aged ; Anatomy ; Cadaver ; Dissection ; Female ; Humans ; intrinsic laryngeal muscles ; Laryngeal Muscles - anatomy & histology ; Larynx ; Larynx - anatomy & histology ; Male ; morphologic variations ; Morphology ; Muscular system ; oblique thyroarytenoid muscle ; Thyroid gland</subject><ispartof>The Laryngoscope, 2018-07, Vol.128 (7), p.1634-1638</ispartof><rights>2018 The American Laryngological, Rhinological and Otological Society, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3570-a3eac6e81a129b3c40ac6bc1ee93850ddb590558216ab191844501715f37951a3</citedby><cites>FETCH-LOGICAL-c3570-a3eac6e81a129b3c40ac6bc1ee93850ddb590558216ab191844501715f37951a3</cites><orcidid>0000-0001-9678-1830 ; 0000-0001-7031-7722</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Flary.27090$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Flary.27090$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,782,786,1419,27931,27932,45581,45582</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29332305$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Shin‐Hyo</creatorcontrib><creatorcontrib>Koh, Ki‐Seok</creatorcontrib><creatorcontrib>Song, Wu‐Chul</creatorcontrib><title>Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly?</title><title>The Laryngoscope</title><addtitle>Laryngoscope</addtitle><description>Objectives/Hypothesis
This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans.
Study Design
Cadaveric anatomic dissections.
Methods
One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle.
Results
Thirty‐six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle. In 28 cases, the belly had a relatively constant origin and an insertion that extended straight onto the TA muscle from the anterosuperior area of the internal surface of the thyroid lamina to the base of the muscular process of the arytenoid cartilage. Eight cases were located in a similar area but with some differences in the origin or insertion features.
Conclusions
We proposed that the oblique TA muscle has a high prevalence and probably acts to close and relax the vocal cords. It remains to be determined whether the oblique TA muscle is an independent muscle or an accessory belly of the main TA muscle.
Level of Evidence
NA. Laryngoscope, 128:1634–1638, 2018</description><subject>Aged</subject><subject>Anatomy</subject><subject>Cadaver</subject><subject>Dissection</subject><subject>Female</subject><subject>Humans</subject><subject>intrinsic laryngeal muscles</subject><subject>Laryngeal Muscles - anatomy & histology</subject><subject>Larynx</subject><subject>Larynx - anatomy & histology</subject><subject>Male</subject><subject>morphologic variations</subject><subject>Morphology</subject><subject>Muscular system</subject><subject>oblique thyroarytenoid muscle</subject><subject>Thyroid gland</subject><issn>0023-852X</issn><issn>1531-4995</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kN9LwzAQx4Mobk5f_AOk4IsI1VzSrIkvMoa_YDAQB_oU0jRjHW06kxbpf29mNx988OWO4z58ufsgdA74BjAmt6Vy3Q1JscAHaAiMQpwIwQ7RMCxpzBl5H6AT79cYQ0oZPkYDIiglFLMhWsyzsvhsTdSsOleHoMbYusijqvW6NFFho1VbKevvookNU242JhTb7IHaRcpGSmvjfe26KDNl2d2foqOlKr052_URWjw-vE2f49n86WU6mcWashTHihqlx4aDAiIyqhMcxkyDMYJyhvM8YwIzxgmMVQYCeJKw8AOwJU0FA0VH6KrP3bg6POEbWRVehxOUNXXrJQguGBepgIBe_kHXdetsuE4SnI75GLjggbruKe1q751Zyo0rqqBFApZb2XIrW_7IDvDFLrLNKpP_onu7AYAe-CpK0_0TJWeT148-9Bsn6Ijh</recordid><startdate>201807</startdate><enddate>201807</enddate><creator>Lee, Shin‐Hyo</creator><creator>Koh, Ki‐Seok</creator><creator>Song, Wu‐Chul</creator><general>Wiley Subscription Services, Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-9678-1830</orcidid><orcidid>https://orcid.org/0000-0001-7031-7722</orcidid></search><sort><creationdate>201807</creationdate><title>Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly?</title><author>Lee, Shin‐Hyo ; Koh, Ki‐Seok ; Song, Wu‐Chul</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3570-a3eac6e81a129b3c40ac6bc1ee93850ddb590558216ab191844501715f37951a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Aged</topic><topic>Anatomy</topic><topic>Cadaver</topic><topic>Dissection</topic><topic>Female</topic><topic>Humans</topic><topic>intrinsic laryngeal muscles</topic><topic>Laryngeal Muscles - anatomy & histology</topic><topic>Larynx</topic><topic>Larynx - anatomy & histology</topic><topic>Male</topic><topic>morphologic variations</topic><topic>Morphology</topic><topic>Muscular system</topic><topic>oblique thyroarytenoid muscle</topic><topic>Thyroid gland</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Shin‐Hyo</creatorcontrib><creatorcontrib>Koh, Ki‐Seok</creatorcontrib><creatorcontrib>Song, Wu‐Chul</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>The Laryngoscope</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Shin‐Hyo</au><au>Koh, Ki‐Seok</au><au>Song, Wu‐Chul</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly?</atitle><jtitle>The Laryngoscope</jtitle><addtitle>Laryngoscope</addtitle><date>2018-07</date><risdate>2018</risdate><volume>128</volume><issue>7</issue><spage>1634</spage><epage>1638</epage><pages>1634-1638</pages><issn>0023-852X</issn><eissn>1531-4995</eissn><abstract>Objectives/Hypothesis
This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans.
Study Design
Cadaveric anatomic dissections.
Methods
One hundred hemilarynges from 50 formalin‐embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle.
Results
Thirty‐six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle. In 28 cases, the belly had a relatively constant origin and an insertion that extended straight onto the TA muscle from the anterosuperior area of the internal surface of the thyroid lamina to the base of the muscular process of the arytenoid cartilage. Eight cases were located in a similar area but with some differences in the origin or insertion features.
Conclusions
We proposed that the oblique TA muscle has a high prevalence and probably acts to close and relax the vocal cords. It remains to be determined whether the oblique TA muscle is an independent muscle or an accessory belly of the main TA muscle.
Level of Evidence
NA. Laryngoscope, 128:1634–1638, 2018</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>29332305</pmid><doi>10.1002/lary.27090</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-9678-1830</orcidid><orcidid>https://orcid.org/0000-0001-7031-7722</orcidid></addata></record> |
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| ispartof | The Laryngoscope, 2018-07, Vol.128 (7), p.1634-1638 |
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| language | eng |
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| source | MEDLINE; Access via Wiley Online Library |
| subjects | Aged Anatomy Cadaver Dissection Female Humans intrinsic laryngeal muscles Laryngeal Muscles - anatomy & histology Larynx Larynx - anatomy & histology Male morphologic variations Morphology Muscular system oblique thyroarytenoid muscle Thyroid gland |
| title | Oblique thyroarytenoid muscle in humans: An independent muscle or an accessory belly? |
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