scholarly journals Comparison of rotator cuff muscle architecture between humans and other selected vertebrate species

2013 ◽  
Vol 217 (2) ◽  
pp. 261-273 ◽  
Author(s):  
M. A. Mathewson ◽  
A. Kwan ◽  
C. M. Eng ◽  
R. L. Lieber ◽  
S. R. Ward
Keyword(s):  
Rotator Cuff ◽  
Muscle Architecture ◽  
Vertebrate Species ◽  
Rotator Cuff Muscle

Rotator Cuff Muscle Architecture

2006 ◽  
Vol PAP ◽  
Author(s):  
Samuel R Ward ◽  
Eric R Hentzen ◽  
Laura H Smallwood ◽  
Robert K Eastlack ◽  
Katherine A Burns ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Muscle Architecture ◽  
Rotator Cuff Muscle

scholarly journals The effect of age on rat rotator cuff muscle architecture

2014 ◽  
Vol 23 (12) ◽  
pp. 1786-1791 ◽  
Author(s):  
Malcolm A. Swan ◽  
Eugene Sato ◽  
Leesa M. Galatz ◽  
Stavros Thomopoulos ◽  
Samuel R. Ward
Keyword(s):  
Rotator Cuff ◽  
Muscle Architecture ◽  
Rotator Cuff Muscle ◽  
Effect Of Age

Chronic Adaptations of the Posterior Rotator Cuff in Professional Pitchers

2021 ◽  
pp. 036354652098868
Author(s):  
Stephen J. Thomas ◽  
Justin Cobb ◽  
Scott Sheridan ◽  
Joseph Rauch ◽  
Ryan W. Paul
Keyword(s):  
Soft Tissue ◽  
Rotator Cuff ◽  
Internal Rotation ◽  
External Rotation ◽  
Negative Relationship ◽  
Muscle Thickness ◽  
Pennation Angle ◽  
Muscle Architecture ◽  
Infraspinatus Muscle ◽  
Teres Minor

Background: Because of the large forces and high frequency of throwing, the upper extremity experiences repetitive stresses that lead to acute and chronic adaptations. While the importance of pennation angle and muscle thickness as predictors of muscle force production has been shown in other populations and other joints, there has been little research done that examines these variables in the shoulders of baseball players. Purpose: (1) To examine the chronic effect pitching has on the rotator cuff muscle architecture (pennation angle and muscle thickness) in healthy professional baseball pitchers, and (2) to examine the correlation between muscle architecture and clinical measures of strength and range of motion (ROM). Study Design: Cross-sectional study; Level of evidence, 3. Methods: Twenty-eight healthy professional pitchers were recruited during the 2019 spring training. Internal rotation (IR) and external rotation (ER) strength were measured with a handheld dynamometer and IR and ER ROM were measured with an inclinometer. A diagnostic ultrasound machine was utilized to capture images of humeral retroversion, as well as the pennation angle and muscle thickness of the infraspinatus and teres minor muscles. ImageJ software was used to quantify the pennation angle and muscle thickness. Results: There were no significant differences between the dominant and nondominant arms for ER or IR strength. Also, no pennation angle and muscle thickness differences were found between the dominant and nondominant arms. A weak positive relationship between infraspinatus muscle thickness (superficial and total) and ER strength ( P = .016, R = 0.287 and P = .009, R = 0.316) and a moderate negative relationship between soft tissue glenohumeral internal rotation deficit (GIRD) and the bilateral difference of the teres minor deep pennation angle ( R = −0.477, P = .008) were observed. No other significant relationships were noted. Conclusion: Our results are contrary to current literature as we expected to see a stronger dominant arm, with a larger pennation angle and greater muscle thickness. Interestingly, we found that ER strength was positively related to only the thickness of the infraspinatus muscle, and that soft tissue GIRD was positively related to only the side-to-side adaptation of the pennation angle within the deep portion of the teres minor. This suggests that when posterior shoulder tightness occurs, specifically the architecture of the teres minor muscle is involved. However, the organization to which these players belonged has a very extensive training protocol throughout the year that emphasizes bilateral training during a large majority of the exercises. Therefore, the results may not be generalizable to all professional players.

Does Extended-Field-of-View Sonography Improve Interrater Reliability for the Detection of Rotator Cuff Muscle Atrophy?

2008 ◽  
Vol 190 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Eoin C. Kavanagh ◽  
George Koulouris ◽  
Laurence Parker ◽  
William B. Morrison ◽  
Diane Bergin ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Muscle Atrophy ◽  
Interrater Reliability ◽  
Field Of View ◽  
Rotator Cuff Muscle ◽  
Extended Field ◽  
Extended Field Of View

Molecular mechanism of fatty degeneration in rotator cuff muscle with tendon rupture

2011 ◽  
Vol 29 (6) ◽  
pp. 861-866 ◽  
Author(s):  
Yoshiaki Itoigawa ◽  
Koshi N. Kishimoto ◽  
Hirotaka Sano ◽  
Kazuo Kaneko ◽  
Eiji Itoi
Keyword(s):  
Rotator Cuff ◽  
Molecular Mechanism ◽  
Tendon Rupture ◽  
Fatty Degeneration ◽  
Rotator Cuff Muscle

Cellular and Molecular Modulation of Rotator Cuff Muscle Pathophysiology

2021 ◽  
Author(s):  
Chengcheng Fu ◽  
Alice H. Huang ◽  
Leesa M. Galatz ◽  
Woojin M. Han
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Muscle ◽  
Molecular Modulation

scholarly journals A Relationship between Calcium Deposit Size with the Pain Intensity on The Patients with Calcified Tendinitis in The Rotator Cuff

2017 ◽  
Vol 6 (01) ◽  
pp. 18
Author(s):  
Indri Wijayanti ◽  
I Nyoman Murdana ◽  
Tirza Z. Tamin
Keyword(s):  
Rotator Cuff ◽  
Pain Intensity ◽  
Muscle Fibers ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Calcium Deposit ◽  
Cross Sectional ◽  
Rotator Cuff Muscle ◽  
Calcium Deposits

Background: Calcified tendeinitis is a disease characterized by calcification of multifocal cells mediated byliving tissue. Calcified tendeinitis may occur due to the collection of calcium in the pouch of supraspinatustendon or may spread between rotator cuff muscle fibers and bursa. This deposit may or may not cause pain ofdiscomfort. The study aim is to determine the correlation of calcium deposit size to the pain intensity in patientswith calcified tendinotis.Methods: A cross-sectional study, on subjects, were diagnosed with calcified tendinitis rotator cuff bymusculoskeletal ultrasonography examination.Results: The twenty subjects, aged 50-70 years old, No significant correlations were found between calciumdeposit size with the pain intensity using VAS, r=0.238, p=0.32.Conclusion. The size of the calcium deposit has not correlated with the pain intensity in rotator cuff calcifiedtendinitis patients. But further research is needed whether the location and form of calcium deposits affect thepain intensity in calcified tendinitis rotator cuff patients.Keywords: calcified tendinitis; calcium deposit size; pain intensity.

Sarcomere length of torn rotator cuff muscle

2009 ◽  
Vol 18 (6) ◽  
pp. 955-959 ◽  
Author(s):  
Tatsuru Tomioka ◽  
Hiroshi Minagawa ◽  
Hiroaki Kijima ◽  
Nobuyuki Yamamoto ◽  
Hidekazu Abe ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Sarcomere Length ◽  
Rotator Cuff Muscle
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