| Autor: |
Alexander Otto, MD, Sebastian Siebenlist, MD, Joshua B. Baldino, PharmD, Matthew Murphy, BS, Lukas N. Muench, MD, Julian Mehl, MD, Elifho Obopilwe, MS, Mark P. Cote, DPT, MSCTR, Andreas B. Imhoff, MD, Augustus D. Mazzocca, MS, MD |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
JSES International, Vol 4, Iss 4, Pp 833-837 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2666-6383 |
| DOI: |
10.1016/j.jseint.2020.08.004 |
| Popis: |
Hypothesis: The purpose of this study was to biomechanically evaluate onlay subpectoral long head of the biceps (LHB) tenodesis with all-suture anchors and unicortical buttons in cadaveric specimens. Methods: After evaluation of bone mineral density, 18 fresh-frozen, unpaired human cadaveric shoulders were randomly assigned to 2 groups: One group received an onlay subpectoral LHB tenodesis with 1 all-suture anchor, whereas the other group received a tenodesis with 1 unicortical button. The specimens were mounted in a servo-hydraulic material testing system. Tendons were initially loaded from 5 N to 100 N for 5000 cycles at 1 Hz. Displacement of the repair constructs was observed with optical tracking. After cyclic loading, each specimen was loaded to failure at a rate of 1 mm/s. Results: The mean displacement after cyclic loading was 6.77 ± 3.15 mm in the all-suture anchor group and 8.41 ± 3.17 mm in the unicortical button group (P = not significant). The mean load to failure was 278.05 ± 38.77 N for all-suture anchor repairs and 291.36 ± 49.69 N for unicortical button repairs (P = not significant). The most common mode of failure in both groups was LHB tendon tearing. There were no significant differences between the 2 groups regarding specimen age (58.33 ± 4.37 years vs. 58.78 ± 5.33 years) and bone mineral density (0.50 ± 0.17 g/cm2 vs. 0.44 ± 0.19 g/cm2). Conclusion: All-suture anchors and unicortical buttons are biomechanically equivalent in displacement and load-to-failure testing for LHB tenodesis. All-suture anchors can be considered a validated alternative for onlay subpectoral LHB tenodesis. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
