Contact pressure of the coracoacromial arch in shoulders with joint contracture: A cadaveric study
There have been many reports describing that the capsular fibrosis of the shoulder joint is the main cause of frozen shoulder, whereas others reported the significance of subacromial impingement as an etiological factor. The purpose of this study was to investigate the contact pressure between the c...
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| Veröffentlicht in: | Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 2017-11, Vol.22 (6), p.1031-1041 |
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| container_title | Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association |
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| creator | Shiota, Yuki Yamamoto, Nobuyuki Kawakami, Jun Nagamoto, Hideaki Muraki, Takayuki Kaneko, Kazuo Itoi, Eiji |
| description | There have been many reports describing that the capsular fibrosis of the shoulder joint is the main cause of frozen shoulder, whereas others reported the significance of subacromial impingement as an etiological factor. The purpose of this study was to investigate the contact pressure between the coracoacromial arch and the rotator cuff tendons to clarify the contact phenomenon in shoulders with joint contracture.
Fourteen fresh-frozen cadaveric shoulders were used. Specimens were divided into two groups: normal group (8 shoulders, definition: more than 61° of flexion and abduction and more than 21° of external rotation) and joint contracture group (6 shoulders, definition: less than 60° of flexion and abduction and less than 20° of external rotation). Contact pressure and area beneath the coracoacromial arch were measured by a flexible force sensor during flexion, abduction, internal and external rotation in adduction and abduction, extension and horizontal extension motions.
The peak contact pressure under the acromion was observed at 90° in flexion and abduction in the normal group, whereas that in the contracture group was observed at 30° in flexion (P = 0.037) and at 30° in abduction (P = 0.041). Contact pressure in the contracture group was significantly higher than that in the normal group at 20° and 30° of abduction (P = 0.043, P = 0.041, respectively). There were no significant differences of contact pressure during other motions. Although no significant differences of contact pressure beneath the coracoacromial ligament were observed, contact area significantly increased in extension and horizontal extension motion.
The contact between the acromion and the rotator cuff was observed in lower angles of flexion and abduction in shoulders with contracture than in those without. When treating patients with shoulder contracture, we need to perform rehabilitation taking such an abnormal movement into consideration. |
| doi_str_mv | 10.1016/j.jos.2017.06.018 |
| format | Article |
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Fourteen fresh-frozen cadaveric shoulders were used. Specimens were divided into two groups: normal group (8 shoulders, definition: more than 61° of flexion and abduction and more than 21° of external rotation) and joint contracture group (6 shoulders, definition: less than 60° of flexion and abduction and less than 20° of external rotation). Contact pressure and area beneath the coracoacromial arch were measured by a flexible force sensor during flexion, abduction, internal and external rotation in adduction and abduction, extension and horizontal extension motions.
The peak contact pressure under the acromion was observed at 90° in flexion and abduction in the normal group, whereas that in the contracture group was observed at 30° in flexion (P = 0.037) and at 30° in abduction (P = 0.041). Contact pressure in the contracture group was significantly higher than that in the normal group at 20° and 30° of abduction (P = 0.043, P = 0.041, respectively). There were no significant differences of contact pressure during other motions. Although no significant differences of contact pressure beneath the coracoacromial ligament were observed, contact area significantly increased in extension and horizontal extension motion.
The contact between the acromion and the rotator cuff was observed in lower angles of flexion and abduction in shoulders with contracture than in those without. When treating patients with shoulder contracture, we need to perform rehabilitation taking such an abnormal movement into consideration.</description><identifier>ISSN: 0949-2658</identifier><identifier>EISSN: 1436-2023</identifier><identifier>DOI: 10.1016/j.jos.2017.06.018</identifier><identifier>PMID: 28838704</identifier><language>eng</language><publisher>Japan: Elsevier B.V</publisher><subject>Acromioclavicular Joint - diagnostic imaging ; Acromioclavicular Joint - physiopathology ; Acromion - physiology ; Aged ; Aged, 80 and over ; Biomechanical Phenomena ; Cadaver ; Compressive Strength - physiology ; Contracture - diagnostic imaging ; Contracture - physiopathology ; Dissection ; Female ; Humans ; Male ; Range of Motion, Articular - physiology ; Sensitivity and Specificity ; Shoulder Impingement Syndrome - diagnosis ; Shoulder Impingement Syndrome - diagnostic imaging ; Tomography, X-Ray Computed - methods</subject><ispartof>Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, 2017-11, Vol.22 (6), p.1031-1041</ispartof><rights>2017 The Japanese Orthopaedic Association</rights><rights>Copyright © 2017 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c372t-87d210fdec0b3628eb48bb266ebc648b9b559d96e5fd03ccd7e9ac120115f3c13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28838704$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Shiota, Yuki</creatorcontrib><creatorcontrib>Yamamoto, Nobuyuki</creatorcontrib><creatorcontrib>Kawakami, Jun</creatorcontrib><creatorcontrib>Nagamoto, Hideaki</creatorcontrib><creatorcontrib>Muraki, Takayuki</creatorcontrib><creatorcontrib>Kaneko, Kazuo</creatorcontrib><creatorcontrib>Itoi, Eiji</creatorcontrib><title>Contact pressure of the coracoacromial arch in shoulders with joint contracture: A cadaveric study</title><title>Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association</title><addtitle>J Orthop Sci</addtitle><description>There have been many reports describing that the capsular fibrosis of the shoulder joint is the main cause of frozen shoulder, whereas others reported the significance of subacromial impingement as an etiological factor. The purpose of this study was to investigate the contact pressure between the coracoacromial arch and the rotator cuff tendons to clarify the contact phenomenon in shoulders with joint contracture.
Fourteen fresh-frozen cadaveric shoulders were used. Specimens were divided into two groups: normal group (8 shoulders, definition: more than 61° of flexion and abduction and more than 21° of external rotation) and joint contracture group (6 shoulders, definition: less than 60° of flexion and abduction and less than 20° of external rotation). Contact pressure and area beneath the coracoacromial arch were measured by a flexible force sensor during flexion, abduction, internal and external rotation in adduction and abduction, extension and horizontal extension motions.
The peak contact pressure under the acromion was observed at 90° in flexion and abduction in the normal group, whereas that in the contracture group was observed at 30° in flexion (P = 0.037) and at 30° in abduction (P = 0.041). Contact pressure in the contracture group was significantly higher than that in the normal group at 20° and 30° of abduction (P = 0.043, P = 0.041, respectively). There were no significant differences of contact pressure during other motions. Although no significant differences of contact pressure beneath the coracoacromial ligament were observed, contact area significantly increased in extension and horizontal extension motion.
The contact between the acromion and the rotator cuff was observed in lower angles of flexion and abduction in shoulders with contracture than in those without. When treating patients with shoulder contracture, we need to perform rehabilitation taking such an abnormal movement into consideration.</description><subject>Acromioclavicular Joint - diagnostic imaging</subject><subject>Acromioclavicular Joint - physiopathology</subject><subject>Acromion - physiology</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Biomechanical Phenomena</subject><subject>Cadaver</subject><subject>Compressive Strength - physiology</subject><subject>Contracture - diagnostic imaging</subject><subject>Contracture - physiopathology</subject><subject>Dissection</subject><subject>Female</subject><subject>Humans</subject><subject>Male</subject><subject>Range of Motion, Articular - physiology</subject><subject>Sensitivity and Specificity</subject><subject>Shoulder Impingement Syndrome - diagnosis</subject><subject>Shoulder Impingement Syndrome - diagnostic imaging</subject><subject>Tomography, X-Ray Computed - methods</subject><issn>0949-2658</issn><issn>1436-2023</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE1v1DAURS1ERYfCD2CDvGST4I_EsWFVjVpAqtQNrC3n-UXjKBMPtlPUf19XU1iyem9x7pXuIeQDZy1nXH2e2znmVjA-tEy1jOtXZMc7qRrBhHxNdsx0phGq15fkbc4zq2Bv-jfkUmgt9cC6HRn3cS0OCj0lzHlLSONEywEpxOQgOkjxGNxCXYIDDSvNh7gtHlOmf0I50DmGtVR2LZUuNf6FXlNw3j1gCkBz2fzjO3IxuSXj-5d7RX7d3vzcf2_u7r_92F_fNSAHURo9eMHZ5BHYKJXQOHZ6HIVSOIKqrxn73nijsJ88kwB-QOOA1_W8nyRweUU-nXtPKf7eMBd7DBlwWdyKccuWGym0NEp3FeVntM7LOeFkTykcXXq0nNlntXa2Va19VmuZslVtzXx8qd_GI_p_ib8uK_D1DGAd-RAw2QwBV0AfEkKxPob_1D8B9GWLTg</recordid><startdate>201711</startdate><enddate>201711</enddate><creator>Shiota, Yuki</creator><creator>Yamamoto, Nobuyuki</creator><creator>Kawakami, Jun</creator><creator>Nagamoto, Hideaki</creator><creator>Muraki, Takayuki</creator><creator>Kaneko, Kazuo</creator><creator>Itoi, Eiji</creator><general>Elsevier B.V</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>7X8</scope></search><sort><creationdate>201711</creationdate><title>Contact pressure of the coracoacromial arch in shoulders with joint contracture: A cadaveric study</title><author>Shiota, Yuki ; Yamamoto, Nobuyuki ; Kawakami, Jun ; Nagamoto, Hideaki ; Muraki, Takayuki ; Kaneko, Kazuo ; Itoi, Eiji</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-87d210fdec0b3628eb48bb266ebc648b9b559d96e5fd03ccd7e9ac120115f3c13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Acromioclavicular Joint - diagnostic imaging</topic><topic>Acromioclavicular Joint - physiopathology</topic><topic>Acromion - physiology</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Biomechanical Phenomena</topic><topic>Cadaver</topic><topic>Compressive Strength - physiology</topic><topic>Contracture - diagnostic imaging</topic><topic>Contracture - physiopathology</topic><topic>Dissection</topic><topic>Female</topic><topic>Humans</topic><topic>Male</topic><topic>Range of Motion, Articular - physiology</topic><topic>Sensitivity and Specificity</topic><topic>Shoulder Impingement Syndrome - diagnosis</topic><topic>Shoulder Impingement Syndrome - diagnostic imaging</topic><topic>Tomography, X-Ray Computed - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shiota, Yuki</creatorcontrib><creatorcontrib>Yamamoto, Nobuyuki</creatorcontrib><creatorcontrib>Kawakami, Jun</creatorcontrib><creatorcontrib>Nagamoto, Hideaki</creatorcontrib><creatorcontrib>Muraki, Takayuki</creatorcontrib><creatorcontrib>Kaneko, Kazuo</creatorcontrib><creatorcontrib>Itoi, Eiji</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shiota, Yuki</au><au>Yamamoto, Nobuyuki</au><au>Kawakami, Jun</au><au>Nagamoto, Hideaki</au><au>Muraki, Takayuki</au><au>Kaneko, Kazuo</au><au>Itoi, Eiji</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Contact pressure of the coracoacromial arch in shoulders with joint contracture: A cadaveric study</atitle><jtitle>Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association</jtitle><addtitle>J Orthop Sci</addtitle><date>2017-11</date><risdate>2017</risdate><volume>22</volume><issue>6</issue><spage>1031</spage><epage>1041</epage><pages>1031-1041</pages><issn>0949-2658</issn><eissn>1436-2023</eissn><abstract>There have been many reports describing that the capsular fibrosis of the shoulder joint is the main cause of frozen shoulder, whereas others reported the significance of subacromial impingement as an etiological factor. The purpose of this study was to investigate the contact pressure between the coracoacromial arch and the rotator cuff tendons to clarify the contact phenomenon in shoulders with joint contracture.
Fourteen fresh-frozen cadaveric shoulders were used. Specimens were divided into two groups: normal group (8 shoulders, definition: more than 61° of flexion and abduction and more than 21° of external rotation) and joint contracture group (6 shoulders, definition: less than 60° of flexion and abduction and less than 20° of external rotation). Contact pressure and area beneath the coracoacromial arch were measured by a flexible force sensor during flexion, abduction, internal and external rotation in adduction and abduction, extension and horizontal extension motions.
The peak contact pressure under the acromion was observed at 90° in flexion and abduction in the normal group, whereas that in the contracture group was observed at 30° in flexion (P = 0.037) and at 30° in abduction (P = 0.041). Contact pressure in the contracture group was significantly higher than that in the normal group at 20° and 30° of abduction (P = 0.043, P = 0.041, respectively). There were no significant differences of contact pressure during other motions. Although no significant differences of contact pressure beneath the coracoacromial ligament were observed, contact area significantly increased in extension and horizontal extension motion.
The contact between the acromion and the rotator cuff was observed in lower angles of flexion and abduction in shoulders with contracture than in those without. When treating patients with shoulder contracture, we need to perform rehabilitation taking such an abnormal movement into consideration.</abstract><cop>Japan</cop><pub>Elsevier B.V</pub><pmid>28838704</pmid><doi>10.1016/j.jos.2017.06.018</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Acromioclavicular Joint - diagnostic imaging Acromioclavicular Joint - physiopathology Acromion - physiology Aged Aged, 80 and over Biomechanical Phenomena Cadaver Compressive Strength - physiology Contracture - diagnostic imaging Contracture - physiopathology Dissection Female Humans Male Range of Motion, Articular - physiology Sensitivity and Specificity Shoulder Impingement Syndrome - diagnosis Shoulder Impingement Syndrome - diagnostic imaging Tomography, X-Ray Computed - methods |
| title | Contact pressure of the coracoacromial arch in shoulders with joint contracture: A cadaveric study |
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