Localized Rotator Cuff Tendon Degeneration for Cadaveric Shoulders with and Without Tears Isolated to the Supraspinatus Tendon

2019 ◽  
Vol 33 (7) ◽  
pp. 1007-1013 ◽  
Author(s):  
Gerald A. Ferrer ◽  
R. Matthew Miller ◽  
Masahito Yoshida ◽  
James H.‐C. Wang ◽  
Volker Musahl ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Supraspinatus Tendon ◽  
Rotator Cuff Tendon ◽  
Tendon Degeneration

scholarly journals Partial Infraspinatus Tendon Transection as a Means for the Development of a Translational Ovine Chronic Rotator Cuff Disease Model

2020 ◽  
Vol 33 (03) ◽  
pp. 212-219
Author(s):  
Jeremiah Easley ◽  
James Johnson ◽  
Daniel Regan ◽  
Eileen Hackett ◽  
Anthony A. Romeo ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Animal Models ◽  
Reverse Shoulder Arthroplasty ◽  
Disease Model ◽  
Soft Tissue Injuries ◽  
Supraspinatus Tendon ◽  
Pathological Process ◽  
Tissue Samples ◽  
Rotator Cuff Tendon ◽  
Infraspinatus Tendon

Abstract Objective Rotator cuff tendon tears are the most common soft tissue injuries in the shoulder joint. Various animal models have been described for this condition, but all current translational animal models have inherent weaknesses in their ability to generate chronically degenerated rotator cuff tendons. The objective of this study was to evaluate a partial infraspinatus tendon transection model as a means of creating a chronically degenerated rotator cuff tendon in an ovine model and compare the injury characteristics of this model to those observed in human patients with severe chronic rotator cuff tendon injuries. Study Design The infraspinatus tendons of six sheep were partially detached followed by capping of the detached medial section of the tendon with Gore-Tex. Human tissue samples of the supraspinatus tendon were harvested from patients undergoing primary reverse shoulder arthroplasty and served as positive controls of chronic rotator cuff tendinopathy. Results Transected sheep tendons were characterized predominantly by an acute reactive and reparative pathological process as compared with the chronic degenerative changes observed in the human tendons. In contrast, the non-transected portion of the ovine tendon showed histological changes, which were more chronic and degenerative in nature when compared with the transected tendon. Conclusion Overall, histological features of the non-transected portion of ovine tendon were more similar to those observed in the chronic degenerated human tendon.

scholarly journals Tendonopathy Does Not Predict Rotator Cuff Healing

2017 ◽  
Vol 5 (3_suppl3) ◽  
pp. 2325967117S0011
Author(s):  
Paul M. Sethi ◽  
Chirag D. Sheth ◽  
Mary Beth McCarthy ◽  
Mark P. Cote ◽  
Augustus D. Mazzocca
Keyword(s):  
Patient Outcome ◽  
Rotator Cuff ◽  
Demographic Data ◽  
Fatty Infiltration ◽  
Supraspinatus Tendon ◽  
Tendon Tissue ◽  
Rotator Cuff Tendon ◽  
Operative Repair ◽  
Histological Appearance ◽  
Cuff Repair

Objectives: Numerous studies have identified risk factors which may decrease the chance of successful rotator cuff healing after surgery. Surgeons may also rely on intraoperative tendon quality to predict healing. There is no data that correlates how the gross tendon morphology and the degree of tendonopathy may impact patient outcome or post-operative tendon healing. The purposes of this study were to 1) compare the gross appearance of the supraspinatus tendon during arthroscopic rotator cuff repair with its histological degree of tendonopathy using the Bonar scoring system, and 2) to determine if either histological appearance or gross appearance correlated with Goutallier grade of fatty infiltration, or post-operative repair integrity. Our hypothesis was that there would be a statistical correlation between gross appearance and histological Bonar score, and that gross appearance would correlate with Goutallier grade and rate of healing. Methods: Demographic data from 105 patients undergoing (supraspinatus) rotator cuff repair were obtained. During surgery, the supraspinatus tendon was rated on thickness, fraying, and stiffness. Tendon tissue was also recovered for histological analysis based on the Bonar scoring system. Post-operative ASES and SST scores, as well as ultrasound assessment of healing, were obtained. Statistical analysis based on demographic data was carried out. Correlation between gross appearance of the supraspinatus tendon and rotator cuff histology (Bonar score) was determined. Correlation of gross appearance with Goutallier grade of fatty infiltration, and with post-operative repair integrity was also determined. Results: Gross appearance of torn rotator cuff tendon tissue did not correlate with histological appearance. Neither hisological score nor gross appearance correlated with demographic data, Goutallier grade, or post-operative repair status. Goutallier grade and vascularity were weakly correlated (rho=0.22, p=0.03) Conclusion: The degree of tendonopathy (Bonar Score) did not correlate with morphological appearance of the rotator cuff tendon, and neither of these parameters correlated with rotator cuff healing or patient outcome. Unlike fatty infiltration, or Goutallier scores, which evaluate the degree of muscle disease, this study suggests that the degree of tendonopathy may not be predictive of suboptimal outcomes. In light of these results, abnormal gross tendon appearance should not impact repair effort or technique. [Figure: see text][Figure: see text][Table: see text][Table: see text][Table: see text]

scholarly journals Targeting Inflammation in Rotator Cuff Tendon Degeneration and Repair

2017 ◽  
Vol 18 (3) ◽  
pp. 84-90 ◽  
Author(s):  
Adam C. Abraham ◽  
Shivam A. Shah ◽  
Stavros Thomopoulos
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tendon ◽  
Tendon Degeneration

FALL-RELATED ROTATOR CUFF TEARS

2006 ◽  
Vol 10 (02) ◽  
pp. 75-81
Author(s):  
Matthew P. Lungren ◽  
David Smith ◽  
James E. Carpenter ◽  
Richard E. Hughes
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tear ◽  
Accidental Falls ◽  
Patient Population ◽  
Traumatic Event ◽  
Rotator Cuff Tears ◽  
Rotator Cuff Tendon ◽  
Tendon Degeneration ◽  
Cuff Tear ◽  
Item Questionnaire

Tears of the rotator cuff tendons may occur as a result of tendon degeneration or from a single traumatic event but commonly a combination of these factors are in play. Rotator cuff tendon degeneration and accidental falls are both known to increase in incidence with increasing age. No study to date has sought to investigate the characteristic of accidental falls as a significant cause of injury in the rotator cuff tear population. We developed a 25 multi-step item questionnaire to investigate the source of injury in sixty rotator cuff tear patients. The majority, 32/60 (53.3%), reported a fall associated with their rotator cuff tear. The tears nearly always occurred on the same side as the fall. Most falls resulting in cuff tears were to the side and front rather than backwards. Our findings highlight that falls are the leading cause of injury in the rotator cuff tear patient population and describe characteristics of the previously under-recognized fall-related rotator cuff tear population.

Contrast-enhanced ultrasound characterization of the vascularity of the rotator cuff tendon: Age- and activity-related changes in the intact asymptomatic rotator cuff

2008 ◽  
Vol 17 (1) ◽  
pp. S96-S100 ◽  
Author(s):  
Jonas R. Rudzki ◽  
Ronald S. Adler ◽  
Russell F. Warren ◽  
Warren R. Kadrmas ◽  
Nikhail Verma ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Contrast Enhanced Ultrasound ◽  
Rotator Cuff Tendon ◽  
Contrast Enhanced

Tight medial knot tying may increase retearing risk after transosseous equivalent repair of rotator cuff tendon

2017 ◽  
Vol 28 (3) ◽  
pp. 267-277 ◽  
Author(s):  
Hirotaka Sano ◽  
Masako Tokunaga ◽  
Moriyuki Noguchi ◽  
Takashi Inawashiro ◽  
Taichi Irie ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Knot Tying ◽  
Rotator Cuff Tendon
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