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- Title
A Biomechanical Comparison of Transosseous-Suture Anchor and Suture Bridge Rotator Cuff Repairs in Cadavers.
- Authors
Bisson, Leslie J.; Manohar, Leslie M.
- Abstract
Background: Several biomechanical studies comparing open and arthroscopic rotator cuff repair methods have shown inferior performance of arthroscopic repairs. Suture anchor-augmented transosseous repairs and suture bridge repairs have shown superior biomechanical performance when compared with other methods, but these 2 repair methods have not been directly compared. Hypothesis: There will be no difference in the biomechanical performance of the transosseous-suture anchor and suture bridge techniques. Study Design: Controlled laboratory study. Methods: Eight paired cadaveric shoulder specimens (16 specimens) had creation followed by repair of a complete tear of the supraspinatus, with the first member of each pair undergoing repair by a transosseous-suture anchor technique and the second member undergoing repair by the suture bridge technique. Specimens were then cycled from 10 to 180 N for 200 cycles, followed by testing to failure at 33 mm/s. Elongation was measured during cyclic testing, and failure load and stiffness were obtained during load-to-failure testing. Failure method was recorded. Results: There was no significant difference between transosseous-suture anchor repairs and suture bridge repairs for elongation (4.0 ± 1.60 mm vs 3.5 ± 1.1 mm, P = .31), failure load (408 ± 93 N vs 419 ± 62 N, P = .70), or stiffness (58 ± 10 N/mm vs 58 ± 14 N/mm, P = .94). The most common mode of failure with each method was suture cutting through tendon. Conclusion: The suture bridge repair exhibited similar biomechanical performance during cyclic and load-to-failure testing as a transosseous-suture anchor repair, which historically has been performed in open or mini-open fashion. Clinical Relevance: Arthroscopic rotator cuff repairs can be performed that are as strong as open or mini-open repairs.
- Subjects
SUTURES; OSTEAL manifestations of general diseases; ROTATOR cuff surgery; ANATOMICAL specimens; INTERNAL fixation in fractures; OPERATIVE surgery; JOINT cracking (Human body); SHOULDER joint range of motion; ARTHROSCOPY
- Publication
American Journal of Sports Medicine, 2009, Vol 37, Issue 10, p1991
- ISSN
0363-5465
- Publication type
Article
- DOI
10.1177/0363546509336260