Changes in pennation angle in rotator cuff muscles with torn tendons
Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscl...
Ausführliche Beschreibung
Autor*in: |
Zuo, Jianlin [verfasserIn] Sano, Hirotaka [verfasserIn] Itoi, Eiji [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
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2011 |
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Übergeordnetes Werk: |
Enthalten in: Journal of orthopaedic science - Amsterdam : Elsevier, 1996, 17(2011), 1 vom: 18. Nov., Seite 58-63 |
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Übergeordnetes Werk: |
volume:17 ; year:2011 ; number:1 ; day:18 ; month:11 ; pages:58-63 |
Links: |
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DOI / URN: |
10.1007/s00776-011-0176-6 |
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Katalog-ID: |
SPR007759614 |
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520 | |a Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. | ||
650 | 4 | |a Rotator Cuff |7 (dpeaa)DE-He213 | |
650 | 4 | |a Rotator Cuff Tear |7 (dpeaa)DE-He213 | |
650 | 4 | |a Supraspinatus Tendon |7 (dpeaa)DE-He213 | |
650 | 4 | |a Pennation Angle |7 (dpeaa)DE-He213 | |
650 | 4 | |a Tear Tendon |7 (dpeaa)DE-He213 | |
700 | 1 | |a Sano, Hirotaka |e verfasserin |4 aut | |
700 | 1 | |a Itoi, Eiji |e verfasserin |4 aut | |
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2011 |
allfields |
10.1007/s00776-011-0176-6 doi (DE-627)SPR007759614 (SPR)s00776-011-0176-6-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.00 bkl 44.83 bkl Zuo, Jianlin verfasserin aut Changes in pennation angle in rotator cuff muscles with torn tendons 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 Sano, Hirotaka verfasserin aut Itoi, Eiji verfasserin aut Enthalten in Journal of orthopaedic science Amsterdam : Elsevier, 1996 17(2011), 1 vom: 18. Nov., Seite 58-63 (DE-627)300185928 (DE-600)1481657-X 1436-2023 nnns volume:17 year:2011 number:1 day:18 month:11 pages:58-63 https://dx.doi.org/10.1007/s00776-011-0176-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_31 GBV_ILN_95 GBV_ILN_150 GBV_ILN_151 GBV_ILN_267 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 44.00 ASE 44.83 ASE AR 17 2011 1 18 11 58-63 |
spelling |
10.1007/s00776-011-0176-6 doi (DE-627)SPR007759614 (SPR)s00776-011-0176-6-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.00 bkl 44.83 bkl Zuo, Jianlin verfasserin aut Changes in pennation angle in rotator cuff muscles with torn tendons 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 Sano, Hirotaka verfasserin aut Itoi, Eiji verfasserin aut Enthalten in Journal of orthopaedic science Amsterdam : Elsevier, 1996 17(2011), 1 vom: 18. Nov., Seite 58-63 (DE-627)300185928 (DE-600)1481657-X 1436-2023 nnns volume:17 year:2011 number:1 day:18 month:11 pages:58-63 https://dx.doi.org/10.1007/s00776-011-0176-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_31 GBV_ILN_95 GBV_ILN_150 GBV_ILN_151 GBV_ILN_267 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 44.00 ASE 44.83 ASE AR 17 2011 1 18 11 58-63 |
allfields_unstemmed |
10.1007/s00776-011-0176-6 doi (DE-627)SPR007759614 (SPR)s00776-011-0176-6-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.00 bkl 44.83 bkl Zuo, Jianlin verfasserin aut Changes in pennation angle in rotator cuff muscles with torn tendons 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 Sano, Hirotaka verfasserin aut Itoi, Eiji verfasserin aut Enthalten in Journal of orthopaedic science Amsterdam : Elsevier, 1996 17(2011), 1 vom: 18. Nov., Seite 58-63 (DE-627)300185928 (DE-600)1481657-X 1436-2023 nnns volume:17 year:2011 number:1 day:18 month:11 pages:58-63 https://dx.doi.org/10.1007/s00776-011-0176-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_31 GBV_ILN_95 GBV_ILN_150 GBV_ILN_151 GBV_ILN_267 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 44.00 ASE 44.83 ASE AR 17 2011 1 18 11 58-63 |
allfieldsGer |
10.1007/s00776-011-0176-6 doi (DE-627)SPR007759614 (SPR)s00776-011-0176-6-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.00 bkl 44.83 bkl Zuo, Jianlin verfasserin aut Changes in pennation angle in rotator cuff muscles with torn tendons 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 Sano, Hirotaka verfasserin aut Itoi, Eiji verfasserin aut Enthalten in Journal of orthopaedic science Amsterdam : Elsevier, 1996 17(2011), 1 vom: 18. Nov., Seite 58-63 (DE-627)300185928 (DE-600)1481657-X 1436-2023 nnns volume:17 year:2011 number:1 day:18 month:11 pages:58-63 https://dx.doi.org/10.1007/s00776-011-0176-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_31 GBV_ILN_95 GBV_ILN_150 GBV_ILN_151 GBV_ILN_267 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 44.00 ASE 44.83 ASE AR 17 2011 1 18 11 58-63 |
allfieldsSound |
10.1007/s00776-011-0176-6 doi (DE-627)SPR007759614 (SPR)s00776-011-0176-6-e DE-627 ger DE-627 rakwb eng 610 ASE 610 ASE 44.00 bkl 44.83 bkl Zuo, Jianlin verfasserin aut Changes in pennation angle in rotator cuff muscles with torn tendons 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 Sano, Hirotaka verfasserin aut Itoi, Eiji verfasserin aut Enthalten in Journal of orthopaedic science Amsterdam : Elsevier, 1996 17(2011), 1 vom: 18. Nov., Seite 58-63 (DE-627)300185928 (DE-600)1481657-X 1436-2023 nnns volume:17 year:2011 number:1 day:18 month:11 pages:58-63 https://dx.doi.org/10.1007/s00776-011-0176-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_31 GBV_ILN_95 GBV_ILN_150 GBV_ILN_151 GBV_ILN_267 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2106 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4307 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4338 44.00 ASE 44.83 ASE AR 17 2011 1 18 11 58-63 |
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author |
Zuo, Jianlin |
spellingShingle |
Zuo, Jianlin ddc 610 bkl 44.00 bkl 44.83 misc Rotator Cuff misc Rotator Cuff Tear misc Supraspinatus Tendon misc Pennation Angle misc Tear Tendon Changes in pennation angle in rotator cuff muscles with torn tendons |
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1436-2023 |
topic_title |
610 ASE 44.00 bkl 44.83 bkl Changes in pennation angle in rotator cuff muscles with torn tendons Rotator Cuff (dpeaa)DE-He213 Rotator Cuff Tear (dpeaa)DE-He213 Supraspinatus Tendon (dpeaa)DE-He213 Pennation Angle (dpeaa)DE-He213 Tear Tendon (dpeaa)DE-He213 |
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ddc 610 bkl 44.00 bkl 44.83 misc Rotator Cuff misc Rotator Cuff Tear misc Supraspinatus Tendon misc Pennation Angle misc Tear Tendon |
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ddc 610 bkl 44.00 bkl 44.83 misc Rotator Cuff misc Rotator Cuff Tear misc Supraspinatus Tendon misc Pennation Angle misc Tear Tendon |
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ddc 610 bkl 44.00 bkl 44.83 misc Rotator Cuff misc Rotator Cuff Tear misc Supraspinatus Tendon misc Pennation Angle misc Tear Tendon |
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Changes in pennation angle in rotator cuff muscles with torn tendons |
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Changes in pennation angle in rotator cuff muscles with torn tendons |
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Zuo, Jianlin |
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Zuo, Jianlin Sano, Hirotaka Itoi, Eiji |
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changes in pennation angle in rotator cuff muscles with torn tendons |
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Changes in pennation angle in rotator cuff muscles with torn tendons |
abstract |
Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. |
abstractGer |
Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. |
abstract_unstemmed |
Background Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons. Methods Twenty embalmed cadaveric shoulders were studied. Ten shoulders with various types of rotator cuff tears (tear group) were compared with ten shoulders that had intact rotator cuff tendons (control group). In seven shoulders with full-thickness tears, the area of the tear was determined by multiplying its length and width. After removing the muscles from the scapula, the superficial muscle fibers of each muscle were removed layer by layer until the entire intramuscular tendon was exposed. Photographs were taken and the pennation angles were then measured on digital images. The correlation between the size of the tear and the pennation angles of the supraspinatus and the infraspinatus muscles were determined statistically. Results The pennation angles of the supraspinatus and infraspinatus muscles in the tear group were significantly greater than those in the control group (P = 0.027 and 0.007, respectively). In seven shoulders with full-thickness rotator cuff tears, a positive correlation was found between the pennation angle of the supraspinatus muscle and the tear length (r = 0.854, P = 0.014). Moreover, a positive correlation was found between the pennation angle of the infraspinatus muscle and the tear area (r = 0.759, P = 0.048). On the other hand, the pennation angle was not affected by the presence of the partial-thickness tears in the remaining three shoulders. Discussion and conclusion In rotator cuff tears, the pennation angles of the involved rotator cuff muscles increased with increasing size of the tear. |
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Changes in pennation angle in rotator cuff muscles with torn tendons |
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