Erschienen in:
01.03.2010 | Arthroscopy and Sports Medicine
Biomechanical comparison of screw-in suture anchor–suture combinations used for Bankart repair
verfasst von:
Brad S. Sparks, John Nyland, Akbar Nawab, Ethan Blackburn, Ryan Krupp, David N. M. Caborn
Erschienen in:
Archives of Orthopaedic and Trauma Surgery
|
Ausgabe 3/2010
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Abstract
Introduction
Bankart repair laxity may contribute to pathologic joint instability. This biomechanical study compared two screw-in suture anchor–suture combinations under tensile loads.
Methods
Twelve pairs of scapulae were implanted with either a 3 mm diameter, 14 mm long poly-l/d-lactide suture anchor with a suture eyelet (Group 1) or a 3.1 mm diameter, 11 mm long polylactide suture anchor with a molded eyelet (Group 2). Constructs were cyclically loaded between 25 and 50 N with a 25 N load increase every 25 cycles.
Results
Group 2 displayed greater displacement at failure, had more specimens with ≥2 mm displacement by the 50 N interval (P = 0.014), and had displaced more by 100 N (P ≤ 0.046). Group 1 displayed a stronger load–displacement at failure relationship than Group 2 (r
2 = 0.67 vs. r
2 = 0.37).
Conclusion
Construct differences may influence decisions regarding the required number of suture anchor–suture loops, the rehabilitation timetable, and the timing of return to unrestricted activities.