scholarly journals The Scapular Assistance Test Results in Changes in Scapular Position and Subacromial Space but Not Rotator Cuff Strength in Subacromial Impingement

2012 ◽  
Vol 42 (5) ◽  
pp. 400-412 ◽  
Author(s):  
Amee L. Seitz ◽  
Philip W. McClure ◽  
Sheryl Finucane ◽  
Jessica M. Ketchum ◽  
Matthew K. Walsworth ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Subacromial Impingement ◽  
Test Results ◽  
Subacromial Space

The Role of Indian Hedgehog Signaling in Tendon Response to Subacromial Impingement: Evaluation Using a Mouse Model

2021 ◽  
pp. 036354652110622
Author(s):  
Yulei Liu ◽  
Xiang-Hua Deng ◽  
Xueying Zhang ◽  
Ting Cong ◽  
Daoyun Chen ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Hedgehog Signaling ◽  
Molecular Mechanisms ◽  
Healing Process ◽  
Biomechanical Testing ◽  
Indian Hedgehog ◽  
Control Group ◽  
Subacromial Impingement ◽  
Subacromial Space ◽  
Gradual Improvement

Background: The underlying cellular and molecular mechanisms involved in the development of tendinopathy due to subacromial supraspinatus tendon (SST) impingement and the response to subsequent removal of impingement remain unknown. Purpose: To investigate the involvement of Indian hedgehog (IHH) signaling in the development of SST tendinopathy and the subsequent healing process after the relief of subacromial impingement in a novel mouse shoulder impingement model. Study Design: Controlled laboratory study. Methods: A total of 48 male wild-type C57BL/6 mice were used in this study. Supraspinatus tendinopathy was induced by inserting a microsurgical clip into the subacromial space bilaterally. Eleven mice were sacrificed at 4 weeks after surgery to establish impingement baseline; 24 mice underwent clip removal at 4 weeks after surgery and then were euthanized at 2 or 4 weeks after clip removal. Thirteen mice without surgical intervention were utilized as the control group. All SSTs were evaluated with biomechanical testing; quantitative histomorphometry after staining with hematoxylin and eosin, Alcian blue, and picrosirius red; and immunohistochemical staining (factor VIII, IHH, Patched1 [PTCH1], and glioma-associated oncogene homolog 1 [GLI1]). Results: The mean failure force and stiffness in the 4-week impingement group decreased significantly compared with the control group ( P < .001) and gradually increased at 2 and 4 weeks after clip removal. Histological analysis demonstrated increased cellularity and disorganized collagen fibers in the SST, with higher modified Bonar scores at 4 weeks, followed by gradual improvement after clip removal. The IHH-positive area and PTCH1- and GLI1-positive cell percentages significantly increased after 4 weeks of clip impingement (20.64% vs 2.06%, P < .001; 53.9% vs 28.03%, P = .016; and 30% vs 12.19%, P = .036, respectively) and continuously increased after clip removal. Conclusion: The authors’ findings suggest that the hedgehog signaling pathway and its downstream signaling mediator and target GLI1 may play a role in the development and healing process of rotator cuff tendinopathy due to extrinsic rotator cuff impingement. Clinical Relevance: This study suggests the potential for the hedgehog pathway, together with its downstream targets, as candidates for further study as potential therapeutic targets in the treatment of supraspinatus tendinopathy.

scholarly journals Correlation between Rotator Cuff Tears and Repeated Subacromial Steroid Injections: A Case-Controlled Study

2009 ◽  
Vol 91 (5) ◽  
pp. 414-416 ◽  
Author(s):  
M Bhatia ◽  
B Singh ◽  
N Nicolaou ◽  
KJ Ravikumar
Keyword(s):  
Rotator Cuff ◽  
Causative Factor ◽  
Rotator Cuff Tears ◽  
Controlled Study ◽  
Distribution Analysis ◽  
Subacromial Impingement ◽  
Subacromial Space ◽  
Retrospective Case ◽  
Significant Difference ◽  
Magnetic Resonance Imaging Mri

INTRODUCTION Concern exists regarding potential damage to the rotator cuff from repeated corticosteroid injections into the subacromial space. PATIENTS AND METHODS In this retrospective, case-controlled study, 230 consecutive patients presenting to three orthopaedic units with subacromial impingement and investigated as an end-point with magnetic resonance imaging (MRI) of the shoulder were divided into groups having received less than three or three or more subacromial injections of corticosteroids. RESULTS With no significant difference in age and sex distribution, analysis by MRI showed no significant difference between the two groups in the incidence of rotator cuff tear (P < 1.0). CONCLUSIONS This suggests that corticosteroid use in patients with subacromial impingement should not be considered a causative factor in rotator cuff tears.

Magnetic Resonance Imaging of Pseudo-impingement of Rotator Cuff with Strength Training

2019 ◽  
Vol 1 ◽  
pp. 2-6
Author(s):  
Asad Naqvi ◽  
Timothy Ariyanayagam ◽  
Mir Akber Ali ◽  
Akhila Rachakonda ◽  
Hema N. Choudur
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rotator Cuff ◽  
Strength Training ◽  
Radiology Department ◽  
Resonance Imaging ◽  
Subacromial Space ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
Training Exercises

Objective: The objective of this study was to outline a novel unique concept of secondary impingement of the muscles, myotendons, and tendons of the rotator cuff from hypertrophy as a result of strength training exercises. Methods: In this retrospective observational study, 58 patients were referred for an magnetic resonance imaging (MRI) by the orthopedic surgeon to the radiology department over a period of 1½ years. All patients gave a history of strength training exercises and presented with clinical features of rotator cuff impingement. Results: We identified features of hypertrophy of rotator cuff muscles, myotendons, and tendons in 12 of these 58 patients. This was the only abnormality on MRI. The hypertrophy of rotator cuff muscles and tendon bulk completely filling the subacromial space to the point of overfilling and resulting in secondary compressive features. Conclusion: Rotator cuff impingement is a common phenomenon that can occur with various inlet and outlet pathological conditions. However, rotator cuff impingement may also result from muscle and tendon hypertrophy from strength training regimens. Hypertrophy of the rotator cuff can result in overfilling of the subacromial space, leading to secondary impingement, which we have termed as “pseudo-impingement.”

scholarly journals The influence of the Kinesio Taping on selected ultrasonography measurements, and quality of life in patients with rotator cuff lesions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Aneta Bac ◽  
Magdalena Wróbel ◽  
Katarzyna Ogrodzka-Ciechanowicz ◽  
Edyta Michalik ◽  
Anna Ścisłowska-Czarnecka
Keyword(s):  
Quality Of Life ◽  
Rotator Cuff ◽  
Statistical Significance ◽  
Control Group ◽  
Subacromial Space ◽  
Kinesio Taping ◽  
Significant Difference ◽  
Rotator Cuff Lesions ◽  
Significant Change

Abstract The assessment of the six-week influence of Kinesio Taping combined with a rehabilitation on selected ultrasonography measurements, the level of disability, and the quality of life in patients with rotator cuff lesions. 60 participants were randomly assigned into a taping group (KT combined with a six-week rehabilitating protocol) and a control group (only rehabilitation protocol). In all patients the following assessments were performed twice: USG, UEFI and NHP questionnaires. In the examination of the subacromial space and the subacromial bursa in the taping group, no statistical significance was observed. A statistically significant change in the thickness of the muscles was obtained only for the thickness of the infraspinatus in the taping group. A statistically significant change was obtained in the assessment of tendinopathy only for the supraspinatus muscle in both groups. Within both groups a statistically significant difference was observed in the average UEFI and NHP scores; however, the differences in the scores obtained between the groups were not statistically significant. The use of KT with a rehabilitation program did not yield statistically significantly better results in the improvement of selected shoulder region indicators, the function of the upper limb and the quality of life.

scholarly journals Use of Gracile and semi-tendinosus tendons (GRAST) for the reconstruction of irreparable rotator cuff tears

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Marie Protais ◽  
Maxime Laurent-Perrot ◽  
Mickaël Artuso ◽  
M. Christian Moody ◽  
Alain Sautet ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Donor Site ◽  
Anatomical Study ◽  
Donor Site Morbidity ◽  
Rotator Cuff Tears ◽  
Subacromial Space ◽  
Greater Tuberosity ◽  
Working Zone ◽  
Superior Capsular Reconstruction

Abstract Background Irreparable rotator cuff tears are common and difficult to treat. Techniques for “filling the loss of substance” require fixation to the rotator cuff stump (tendon augmentation) or to the glenoid (superior capsular reconstruction), which are complicated by the narrow working zone of the subacromial space. The main objective of this study was to determine whether a braided graft of gracilis (GR) and semitendinosus (ST) could fill a loss of tendon substance from an irreparable rupture of the supra- and infraspinatus, by fixing the graft to the greater tuberosity and the spine of the scapula. Methods This was a cadaveric study with the use of ten specimens. The GRA and ST tendons were harvested, braided and reinforced with suture. An experimental tear of the supraspinatus (SS) and upper infraspinatus (IS) retracted at the glenoid was made. The GRAST transplant was positioned over the tear. The transplant was attached to the greater tuberosity by two anchors and then attached to the medial third of the scapular spine by trans-osseous stitching. The percentage of filling obtained was then measured and passive mobility of the shoulder was assessed. We proceeded to the same technique under arthroscopy for a 73 years old patient whom we treated for a painful shoulder with irreparable cuff tear. We inserted a GRAST graft using arthroscopy. Results The Braided-GRAST allowed a 100% filling of the loss of tendon substance. Mobility was complete in all cases. Conclusion This technique simplifies the medial fixation and restores the musculo-tendinous chain where current grafting techniques only fill a tendinous defect. The transplant could have a subacromial “spacer” effect and lower the humeral head. The donor site morbidity and the fate of the transplant in-vivo are two limits to be discussed. This anatomical study paves the way for clinical experimentation.

scholarly journals The experience with the use of a subacromial balloon in the treatment of patients with large, massive, irreparable rotator cuff tears

2020 ◽  
Vol 11 (4) ◽  
pp. 14-22
Author(s):  
Мaksim F. Lazko ◽  
Alexey P. Prizov ◽  
Fedor L. Lazko ◽  
Evgeny A. Beliak ◽  
Ivan G. Maglaperidze ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Shoulder Joint ◽  
Pain Syndrome ◽  
Rotator Cuff Tears ◽  
Average Score ◽  
Subacromial Space ◽  
Rotator Cuff Injuries ◽  
Goutallier Classification ◽  
Upper Extremity Function ◽  
A Prospective Study

Background. Large, massive irreparable rotator cuff tears lead to a significant decrease in the function of the shoulder joint together with the development of a pronounced pain syndrome. Such injuries are difficult to treat, and the number of relapses, when trying to restore them, is quite high. The installation of a subacromial balloon is the method of choice for this group of patients and allows restoring the function of the shoulder joint fairly successfully. Aim: to evaluate the results of the treatment of patients with massive irreparable rotator cuff tears injuries in a prospective study from 2016 to 2018. Methods. The results of the arthroscopic treatment of large, irreparable rotator cuff injuries in 25 patients (with the average age of 67 5 years) with the installation of a subacromial balloon are presented. In all the clinical cases, there was a pronounced (grades 34, according to the Goutallier classification) fatty dystrophy of the rotator cuff muscles (supraspinatus or in combination with subaspinatus). All the patients underwent the subacromial space release with a thorough bursectomy and subsequent installation of a subacromial balloon. Results. The average score on the UCLA scale was 14 3 points (1117) before the operation and 312 points (2933) 12 months after the operation, the results were considered good and excellent. Conclusion. The results obtained allow us to evaluate the described technique as low-traumatic, simple and fast in its accomplishment, aimed at the reduction of the pain syndrome and restoration of the upper extremity function.

scholarly journals How to Insert Acupuncture Needles into the Subacromial Space through LI15

2021 ◽  
Vol 38 (3) ◽  
pp. 242-244
Author(s):  
Kwang Ho Lee
Keyword(s):  
Rotator Cuff ◽  
Acupuncture Point ◽  
Supraspinatus Tendon ◽  
Subacromial Space ◽  
Rotator Cuff Disease ◽  
Front Edge ◽  
Upper Arm ◽  
Acupuncture Needle ◽  
X Ray ◽  
Stimulation Of

LI15 is an important acupuncture point to treat shoulder pain. There are 4 needling methods for LI15 in the textbook; 1 method requires the insertion of the needle horizontally between the acromion and the great tuberosity of the humerus with the arm lowered for supraspinatus tendonitis. This method is also applicable for all conditions of rotator cuff disease, but it has not previously been described in detail. Providing X-ray scans and describing needle direction and depth of insertion will provide evidence for needling with the arm down as an effective stimulation of the subacromial space. Firstly, for this technique, with the arm raised, a concave point is located between the front edge of the acromion and the humerus, and the lower upper arm. Secondly, the acupuncture needle is inserted slightly posteriorly towards the supraspinous fossa, in the direction of the supraspinatus tendon and to a depth of 30-40 mm.

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