caa a22 4500 605456925 CHVBK 20210128100220.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00167-014-3128-9 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3128-9 Biomechanical consequences of proximal biceps tenodesis stitch location: musculotendinous junction versus tendon only [Elektronische Daten] [Ulrich Spiegl, Sean Smith, Simon Euler, Peter Millett, Coen Wijdicks] Purpose: The purpose of this study was to determine the biomechanical effects of placing the biceps tenodesis stitch at the musculotendinous junction versus in the tendon only. Placing the stitch at the musculotendinous junction was hypothesized to result in a significantly weaker repair than stitching in the tendon only. Methods: Testing was performed on two groups of six matched pairs of long head of the biceps (LHB) with enclosed musculotendinous junction and muscle belly. Specimens were randomly distributed between two groups. The same baseball whipstitch configuration was performed using the same suture material in both groups. In group 1, the stitch configuration started 1cm proximal of the musculotendinous junction (tendon tissue only). For contralateral specimens, the baseball whipstitching included the distal 1cm of the musculotendinous junction. Specimens were pulled to failure at a rate of 60mm/min. Ultimate failure load and failure pattern were recorded. Results: Average ultimate failure load of group 2 was significantly higher than group 1 (mean increase 18.6%, range −9.7 to 35.8%; p=0.046). A cut-through failure pattern was observed for all specimens in both groups. There were highly significant correlations between ultimate failure load and tendon thickness (p=0.004, τ=0.636), age of the specimen (p=0.002, τ=0.724), and gender (p=0.004, τ=−0.739). No significant difference between the groups regarding tendon diameter was observed. Conclusions: Baseball whipstitching of the LHB including the distal part of the tendon and the musculotendinous junction was stronger than sutures placed in the tendon alone. These results suggest that suture pattern affects initial strength of repair, and therefore may affect decisions regarding early post-operative rehabilitation or ultimate clinical outcomes. Inclusion of the musculotendinous junction should be considered clinically for improved time zero strength of the repair construct. Springer-Verlag Berlin Heidelberg, 2014 Biceps tenodesis nationallicence Musculotendinous junction nationallicence Stitch location nationallicence Baseball whipstitch nationallicence Spiegl Ulrich Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut Smith Sean Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut Euler Simon Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut Millett Peter Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut Wijdicks Coen Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/9(2015-09-01), 2661-2666 0942-2056 23:9<2661 2015 23 167 https://doi.org/10.1007/s00167-014-3128-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3128-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Spiegl Ulrich Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut NATIONALLICENCE 700 1- Smith Sean Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut NATIONALLICENCE 700 1- Euler Simon Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut NATIONALLICENCE 700 1- Millett Peter Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut NATIONALLICENCE 700 1- Wijdicks Coen Steadman Philippon Research Institute, 181W. Meadow Drive, Ste. #1000, 81657, Vail, CO, USA aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/9(2015-09-01), 2661-2666 0942-2056 23:9<2661 2015 23 167