All Suture Biceps Tenodesis Has Greater Biomechanical Strength Than Metal Button Fixation

• DOI: 10.1016/j.asmr.2024.100966
• Publication Date: 2024-07-08T06:22:51Z
• Authors: Matthew J. Kinnard; Jeremy D. Tran; Steven D. Voinier; Donald F. Colantonio; Timothy P. Murphy; Patrick K. Mescher; Michael A. Donohue; Melvin D. Helgeson; Christopher J. Tu...
• Keywords: Cadaveric spasm; Biomechanics; Ultimate load

PURPOSEThe purpose of this study was to evaluate the maximal load failure, cyclic displacement, stiffness, and modes failure onlay subpectoral biceps tenodesis with an intramedullary unicortical metal button (MB) versus inlay, all-suture Caspari-Weber (CW) technique.METHODSSixteen matched paired human cadaveric proximal humeri were randomly allocated for BT either CW or MB using a high-strength suture (n = 16; 8 male, female, mean age 82.5 years, range 62-99 years). Specimens tested on servohydraulic mechanical testing apparatus under 1,000 cycles then loaded failure. Maximal construct stiffness mode compared.RESULTSThere no significant difference between groups when comparing creep displacement at ultimate load. The technique greater than (588.36 ± 149.06 N vs 375.83 131.4 N, P =0.014).CONCLUSIONIn study, had while having similar stiffness. may offer lower cost alternative mechanically robust fixation performing open tenodesis.CLINICAL RELEVANCEThis biomechanical can help guide surgeons selecting