scholarly journals Migration into sub-deltoid bursa of calcification supraspinatus tendon

2021 ◽  
Author(s):  
Domenico Nicoletti
Keyword(s):  
Supraspinatus Tendon

Regional Variation in Human Supraspinatus Tendon Proteoglycans: Decorin, Biglycan, and Aggrecan

2012 ◽  
pp. 120106110951007
Author(s):  
Paul E Matuszewski ◽  
Yi-Ling Chen ◽  
Spencer E Szczesny ◽  
Spencer Lake ◽  
Dawn M Elliott ◽  
...  
Keyword(s):  
Regional Variation ◽  
Supraspinatus Tendon

scholarly journals Strain Elastography and Tendon Response to an Exercise Program in Patients With Supraspinatus Tendinopathy: An Exploratory Study

2020 ◽  
Vol 8 (12) ◽  
pp. 232596712096518
Author(s):  
Karen Brage ◽  
Birgit Juul-Kristensen ◽  
John Hjarbaek ◽  
Eleanor Boyle ◽  
Per Kjaer ◽  
...  
Keyword(s):  
Patient Reported Outcomes ◽  
Structural Changes ◽  
Supraspinatus Tendon ◽  
Patient Reported Outcome ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Tendon Stiffness ◽  
Patient Reported ◽  
Tendon Thickness

Background: Shoulder pain is common, with a lifetime prevalence of up to 67%. Evidence is conflicting in relation to imaging findings and pain in the shoulder. Sonoelastography can be used to estimate tissue stiffness and may be a clinically relevant technique for diagnosing and monitoring tendon healing. Purpose: To evaluate changes in supraspinatus tendon stiffness using strain elastography (SEL) and associations with changes in patient-reported outcomes, supraspinatus tendon thickness, and grade of tendinopathy after 12 weeks of unilateral shoulder exercises in patients with supraspinatus tendinopathy. Study Design: Controlled laboratory study. Methods: A total of 23 patients with unilateral clinical supraspinatus tendinopathy performed 12 weeks of “standard care” exercises. At baseline and follow-up, supraspinatus tendon stiffness was measured bilaterally using SEL and compared with tendinopathy grading on magnetic resonance imaging scans and tendon thickness measured using conventional ultrasound. Patient-reported outcome measures included physical function and symptoms from the Disabilities of the Arm, Shoulder and Hand questionnaire and pain rating (visual analog scale). Results: No significant changes in SEL within or between groups (asymptomatic vs symptomatic tendon) were seen. All patient-reported outcomes showed significant improvement from baseline to follow-up, but with no change in tendinopathy grading and tendon thickness. No significant differences in the proportion of patients changing above the minimal detectable change in SEL and PROM were seen, except for discomfort while sleeping. Conclusion: Despite no significant within-group or between-group changes in SEL, significant improvements were found in patient-reported outcomes. An acceptable agreement between patients changing above the minimal detectable change in SEL and patient-reported outcome measure was seen. Further studies should explore the use of SEL to detect changes after tendon repair and long-term training potentially in subgroups of different tendinopathy phases. Clinical Relevance: In the short term, structural changes in supraspinatus tendons could not be visualized using SEL, indicating that a longer time span should be expected in order to observe structural changes, which should be considered before return to sports. Subgrouping based on stage of tendinopathy may also be important in order to evaluate changes over time with SEL among patients with supraspinatus tendinopathy. Registration: NCT03425357 ( ClinicalTrials.gov identifier).

scholarly journals Curvelet based automatic segmentation of supraspinatus tendon from ultrasound image: a focused assistive diagnostic method

2014 ◽  
Vol 13 (1) ◽  
pp. 157 ◽  
Author(s):  
Rishu Gupta ◽  
Irraivan Elamvazuthi ◽  
Sarat Dass ◽  
Ibrahima Faye ◽  
Pandian Vasant ◽  
...  
Keyword(s):  
Diagnostic Method ◽  
Automatic Segmentation ◽  
Ultrasound Image ◽  
Supraspinatus Tendon

Up-regulation of Glutamate in Painful Human Supraspinatus Tendon Tears

2014 ◽  
Vol 42 (8) ◽  
pp. 1955-1962 ◽  
Author(s):  
Sarah L. Franklin ◽  
Benjamin J.F. Dean ◽  
Kim Wheway ◽  
Bridget Watkins ◽  
Muhammad K. Javaid ◽  
...  
Keyword(s):  
Supraspinatus Tendon ◽  
Tendon Tears

scholarly journals Influence of Tear Size on the Load Bearing Capacity of the Supraspinatus Tendon

2014 ◽  
Vol 18 (2) ◽  
pp. 253
Author(s):  
Alejandro Celemín ◽  
Rodrigo Vargas Ariza ◽  
Juan C Briceño ◽  
Juan C González Goméz ◽  
Daniel R. Suárez
Keyword(s):  
Bearing Capacity ◽  
Supraspinatus Tendon ◽  
Strength Index ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Tear Size

La ruptura del tendón supraespinoso es una de las lesiones más comunes del manguito rotador. El objetivo de este estudio es evaluar el efecto de una ruptura del tendón en su capacidad de carga y estimar el tamaño de la ruptura a la cual el tendón no puede soportar carga en el rango fisiológico. Este estudio presenta un único índice que indica la capacidad de carga del tendón, Strength Index (SI)el cual se calcula usando un modelo computacional del tendón. También se calculó el tamaño crítico de la ruptura (CTS)  definido como el tamaño de la ruptura a la cual el tendón no puede soportar una carga máxima. SI y CTS fueron estimados para 8 rupturas de tamaño creciente y 7 diferentes esfuerzos últimos para incluir variabilidad por crecimiento de la ruptura y del paciente, respectivamente. El SI de tendón disminuyó con el aumento del tamaño de la ruptura. El CTS para el tendón modelado fue estimado entre 6 y 19 mm, asumiendo un esfuerzo último en un rango fisiológico entre 1,6 y 12,6 MPa. La posible aplicación clínica del índice CTS es limitada al surgimiento de nuevas técnicas que permitan la estimación acertada del esfuerzo último del tejido

Freeze-dried chitosan-platelet-rich plasma implants improve supraspinatus tendon attachment in a transosseous rotator cuff repair model in the rabbit

2018 ◽  
Vol 33 (6) ◽  
pp. 792-807 ◽  
Author(s):  
Gabrielle Deprés-Tremblay ◽  
Anik Chevrier ◽  
Martyn Snow ◽  
Scott Rodeo ◽  
Michael D Buschmann
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Repair ◽  
Platelet Rich Plasma ◽  
Rabbit Model ◽  
Supraspinatus Tendon ◽  
Rotator Cuff Tears ◽  
Polymorphonuclear Cells ◽  
Post Surgery ◽  
Freeze Dried ◽  
Cuff Repair

Rotator cuff tears result in shoulder pain, stiffness, weakness and loss of motion. After surgical repair, high failure rates have been reported based on objective imaging and it is recognized that current surgical treatments need improvement. The aim of the study was to assess whether implants composed of freeze-dried chitosan (CS) solubilized in autologous platelet-rich plasma (PRP) can improve rotator cuff repair in a rabbit model. Complete tears were created bilaterally in the supraspinatus tendon of New Zealand White rabbits ( n = 4 in a pilot feasibility study followed by n = 13 in a larger efficacy study), which were repaired using transosseous suturing. On the treated side, CS-PRP implants were injected into the transosseous tunnels and the tendon itself, and healing was assessed histologically at time points ranging from one day to two months post-surgery. CS-PRP implants were resident within transosseous tunnels and adhered to tendon surfaces at one day post-surgery and induced recruitment of polymorphonuclear cells from 1 to 14 days. CS-PRP implants improved attachment of the supraspinatus tendon to the humeral head through increased bone remodelling at the greater tuberosity and also inhibited heterotopic ossification of the supraspinatus tendon at two months. In addition, the implants did not induce any detectable deleterious effects. This preliminary study provides the first evidence that CS-PRP implants could be effective in improving rotator cuff tendon attachment in a small animal model.

Optimization of T2-weighted imaging for shoulder magnetic resonance arthrography by synthetic magnetic resonance imaging

2017 ◽  
Vol 59 (8) ◽  
pp. 959-965
Author(s):  
Seung Hyun Lee ◽  
Young Han Lee ◽  
Seok Hahn ◽  
Jaemoon Yang ◽  
Ho-Taek Song ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Supraspinatus Tendon ◽  
Joint Fluid ◽  
Resonance Imaging ◽  
Mr Images ◽  
Diagnostic Agreement ◽  
Tissue Contrast ◽  
Synthetic Images ◽  
Synthetic Mri

Background Synthetic magnetic resonance imaging (MRI) allows reformatting of various synthetic images by adjustment of scanning parameters such as repetition time (TR) and echo time (TE). Optimized MR images can be reformatted from T1, T2, and proton density (PD) values to achieve maximum tissue contrast between joint fluid and adjacent soft tissue. Purpose To demonstrate the method for optimization of TR and TE by synthetic MRI and to validate the optimized images by comparison with conventional shoulder MR arthrography (MRA) images. Material and Methods Thirty-seven shoulder MRA images acquired by synthetic MRI were retrospectively evaluated for PD, T1, and T2 values at the joint fluid and glenoid labrum. Differences in signal intensity between the fluid and labrum were observed between TR of 500–6000 ms and TE of 80–300 ms in T2-weighted (T2W) images. Conventional T2W and synthetic images were analyzed for diagnostic agreement of supraspinatus tendon abnormalities (kappa statistics) and image quality scores (one-way analysis of variance with post-hoc analysis). Results Optimized mean values of TR and TE were 2724.7 ± 1634.7 and 80.1 ± 0.4, respectively. Diagnostic agreement for supraspinatus tendon abnormalities between conventional and synthetic MR images was excellent (κ = 0.882). The mean image quality score of the joint space in optimized synthetic images was significantly higher compared with those in conventional and synthetic images (2.861 ± 0.351 vs. 2.556 ± 0.607 vs. 2.750 ± 0.439; P < 0.05). Conclusion Synthetic MRI with optimized TR and TE for shoulder MRA enables optimization of soft-tissue contrast.

scholarly journals Murine Supraspinatus Tendon Detachment and Repair Model Augmented With Tendon-Derived, Activated Endothelial Cells: A New Concept in Biologic Enhancement of Tendon-to-Bone Healing

2017 ◽  
Vol 5 (7_suppl6) ◽  
pp. 2325967117S0044 ◽  
Author(s):  
Amir H. Lebaschi ◽  
Christopher L. Camp ◽  
Camilia Carballo ◽  
Ting Cong ◽  
Zoe Album ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Bone Healing ◽  
Supraspinatus Tendon
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