Tear Completion Versus In Situ Repair for 50% Partial-Thickness Bursal-Side Rotator Cuff Tears: A Biomechanical and Histological Study in an Animal Model
Autor: | Wasim Anwar, Ayşe Nur Toksöz Yıldırım, Kerem Bilsel, Omer Ayik, Ergun Bozdag, Anil Pulatkan, Mehmet Kapicioglu, Ibrahim Tuncay |
---|---|
Přispěvatelé: | KAPICIOĞLU, Mehmet |
Rok vydání: | 2020 |
Předmět: |
Shoulder
medicine.medical_specialty Physical Therapy Sports Therapy and Rehabilitation Lacerations Rotator Cuff Injuries Arthroscopy Rotator Cuff 03 medical and health sciences 0302 clinical medicine Animal model Partial thickness rotator cuff tear medicine Animals Orthopedic Procedures Orthopedics and Sports Medicine Rotator cuff Rupture 030222 orthopedics A Biomechanical and Histological Study in an Animal Model- AMERICAN JOURNAL OF SPORTS MEDICINE 2020 [Pulatkan A. Anwar W. Ayik O. Bozdag E. Yildirim A. N. KAPICIOĞLU M. TUNCAY İ. Bilsel K. -Tear Completion Versus In Situ Repair for 50% Partial-Thickness Bursal-Side Rotator Cuff Tears] business.industry 030229 sport sciences Surgery medicine.anatomical_structure Tears Rabbits business Partial thickness |
Zdroj: | The American Journal of Sports Medicine. 48:1818-1825 |
ISSN: | 1552-3365 0363-5465 |
Popis: | Background: Tear completion followed by repair (TCR) and in situ repair (ISR) have been widely used for bursal-side partial-thickness rotator cuff tears (PTRCTs). Both techniques have shown favorable results; however, controversy continues in terms of the best management. Purpose: To compare the histological and biomechanical outcomes of these 2 techniques for 50% partial-thickness bursal-side rotator cuff tear repair in a rabbit model. Study Design: Controlled laboratory study. Methods: A total of 27 rabbits were used in this experimental study. Seven rabbits were sacrificed at the beginning of the study to form an intact tendon control group. A chronic 50% partial-thickness bursal-side tear model was created in 20 rabbits, and 5 rabbits were sacrificed for biomechanical testing of chronic partial-thickness tears (control group) without repair. In 15 rabbits, partial-thickness tears were repaired after 8 weeks. Partial-thickness tears in the right shoulders were completed to full thickness and repaired; in contrast, left shoulders were repaired in situ. All rabbits were euthanized 8 weeks after the repair. The tendons were tested biomechanically for ultimate failure, linear stiffness, and displacement. Histological evaluations of tendon-to-bone healing were performed via the modified Watkins score. Results: Macroscopically, all repaired tendons were attached to the greater tuberosity. The TCR group had a higher failure load than the ISR group, with mean values of 140.4 ± 13.8 N and 108.1 ± 16.6 N, respectively ( P = .001). The modified Watkins score was significantly higher in the TCR group (23.5; range, 22-27) than in the ISR group (19.5; range, 16-22) ( P = .009). Conclusion: Both repair techniques are effective for 50% partial-thickness bursal-side rotator cuff tears; however, TCR yields significantly superior biomechanical and histological characteristics compared with ISR. Clinical Relevance: Tear completion and repair technique may increase tendon-to-bone healing and thereby reduce re-rupture rate in the partial thickness bursal side rotator cuff tears. |
Databáze: | OpenAIRE |
Externí odkaz: |