Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears
Background: One of the pain-related factors in rotator cuff tears (RCTs) is abnormal scapular motion, which is thought to be related to the levator scapulae muscle activation. Additionally, attention has recently focused on the peak systolic velocity (PSV) as one of the causes of pain, but blood flo...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | JSES International |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666638323001640 |
| _version_ | 1827781703141163008 |
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| author | Keita Kawabuchi, PT Masatoshi Nakamura, PT, PhD |
| author_facet | Keita Kawabuchi, PT Masatoshi Nakamura, PT, PhD |
| author_sort | Keita Kawabuchi, PT |
| collection | DOAJ |
| description | Background: One of the pain-related factors in rotator cuff tears (RCTs) is abnormal scapular motion, which is thought to be related to the levator scapulae muscle activation. Additionally, attention has recently focused on the peak systolic velocity (PSV) as one of the causes of pain, but blood flow outside of the vessels supplying the rotator cuff has not been clarified. This study aimed to determine the difference in PSV in the dorsal scapular artery (DSA), which is the vessel that supplies the levator scapulae muscles, and the association between PSV and pain and shoulder function in patients with RCTs between the tear and nontear sides. Methods: This study included 31 patients with RCTs with tear and nontear sides. Magnetic resonance imaging and radiographic examinations included Cofield classification, Goutallier classification, thickening of the coracohumeral ligament, and measurement of the acromiohumeral interval. Clinical evaluation included an automatic range of motion (ROM) for flexion, abduction, and external rotation (ER), a visual analog scale, and the Shoulder36. PSV was evaluated using ultrasound pulsed Doppler mode to assess PSV of DSA. The PSV of DSA on the first rib was drawn in the medial aspect of the suprascapular angle in the long axis, and the maximum PSV waveform was measured three times. The average value was used for further analysis. Results: The PSV in the DSA was significantly higher (P = .04, 95% confidence interval: 0.2-7.6) on the tear (22.6 ± 7.4 cm/s) than the nontear sides (18.9 ± 6.9 cm/s). In addition, a significant negative correlation (r = −0.46, P = .0087) was found between PSV in DSA and ER on the tear side. Conclusion: This study revealed a significantly increased PSV in the DSA on the tear side in RCTs and negatively correlated with ER ROM. The results suggest that increased PSV in the DSA may contribute to ER ROM limitation in the glenohumeral joint. |
| first_indexed | 2024-03-11T15:22:28Z |
| format | Article |
| id | doaj.art-c9e08c6bd4b4425d8a1a883da1f373d3 |
| institution | Directory Open Access Journal |
| issn | 2666-6383 |
| language | English |
| last_indexed | 2024-03-11T15:22:28Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | JSES International |
| spelling | doaj.art-c9e08c6bd4b4425d8a1a883da1f373d32023-10-28T05:09:48ZengElsevierJSES International2666-63832023-11-017623562360Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tearsKeita Kawabuchi, PT0Masatoshi Nakamura, PT, PhD1Rehabilitation Room, Tottori Prefectural Central Hospital, Tottori, Japan; Corresponding author: Keita Kawabuchi, PT, Tottori Prefectural Central Hospital, 730 Ezu, Tottori, 680-0901, Japan.Faculty of Rehabilitation Science, Nishi Kyushu University Ozaki, Kanzaki, Saga, JapanBackground: One of the pain-related factors in rotator cuff tears (RCTs) is abnormal scapular motion, which is thought to be related to the levator scapulae muscle activation. Additionally, attention has recently focused on the peak systolic velocity (PSV) as one of the causes of pain, but blood flow outside of the vessels supplying the rotator cuff has not been clarified. This study aimed to determine the difference in PSV in the dorsal scapular artery (DSA), which is the vessel that supplies the levator scapulae muscles, and the association between PSV and pain and shoulder function in patients with RCTs between the tear and nontear sides. Methods: This study included 31 patients with RCTs with tear and nontear sides. Magnetic resonance imaging and radiographic examinations included Cofield classification, Goutallier classification, thickening of the coracohumeral ligament, and measurement of the acromiohumeral interval. Clinical evaluation included an automatic range of motion (ROM) for flexion, abduction, and external rotation (ER), a visual analog scale, and the Shoulder36. PSV was evaluated using ultrasound pulsed Doppler mode to assess PSV of DSA. The PSV of DSA on the first rib was drawn in the medial aspect of the suprascapular angle in the long axis, and the maximum PSV waveform was measured three times. The average value was used for further analysis. Results: The PSV in the DSA was significantly higher (P = .04, 95% confidence interval: 0.2-7.6) on the tear (22.6 ± 7.4 cm/s) than the nontear sides (18.9 ± 6.9 cm/s). In addition, a significant negative correlation (r = −0.46, P = .0087) was found between PSV in DSA and ER on the tear side. Conclusion: This study revealed a significantly increased PSV in the DSA on the tear side in RCTs and negatively correlated with ER ROM. The results suggest that increased PSV in the DSA may contribute to ER ROM limitation in the glenohumeral joint.http://www.sciencedirect.com/science/article/pii/S2666638323001640Peak systolic velocityDorsal scapular arteryScapularShoulder functionPainExternal rotation |
| spellingShingle | Keita Kawabuchi, PT Masatoshi Nakamura, PT, PhD Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears JSES International Peak systolic velocity Dorsal scapular artery Scapular Shoulder function Pain External rotation |
| title | Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| title_full | Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| title_fullStr | Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| title_full_unstemmed | Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| title_short | Changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| title_sort | changes in blood flow in the dorsal scapular artery and relationship to shoulder joint function in rotator cuff tears |
| topic | Peak systolic velocity Dorsal scapular artery Scapular Shoulder function Pain External rotation |
| url | http://www.sciencedirect.com/science/article/pii/S2666638323001640 |
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