Cortical suture button fixation vs. bicortical screw fixation in the Latarjet procedure: a biomechanical comparison

Journal of Shoulder and Elbow Surgery
Robert C WilliamsNicholas H Maassen

Abstract

The Latarjet procedure traditionally has been performed with 2 screws in an open manner. Recently, cortical suture button fixation for coracoid transfer has been used in hopes of mitigating complications seen with screw placement. The aim of this study was to evaluate a cortical suture button and technique currently available in the United States compared with screw fixation in the Latarjet procedure in a cadaveric model. We randomly assigned 9 matched pairs of fresh-frozen cadaveric shoulders (N = 18) to undergo the Latarjet procedure with either screw fixation or cortical suture button fixation. After fixation, all shoulders underwent biomechanical testing with direct loading on the graft vas a material testing system. Cyclic testing was performed for 100 cycles to determine axial displacement with time; each graft was then monotonically loaded to failure. The maximum cycle displacement was significantly less for screw fixation vs. cortical suture button fixation (3.1 ± 1.3 mm vs. 8.9 ± 2.1 mm, P < .0001). The total load at failure was 481.1 ± 88.8 N for screws and 175.5 ± 95.8 N for cortical suture buttons (P < .0001). Bony damage to the surrounding anatomy was more extensive at failure in the screw-fixation group. At time z...Continue Reading

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Citations

Apr 9, 2021·The American Journal of Sports Medicine·Nicolas BonneviallePierre Mansat
Feb 20, 2021·Journal of Shoulder and Elbow Surgery·Eoghan T HurleyLaith Jazrawi
Aug 1, 2021·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Eoghan T HurleyUNKNOWN Anterior Shoulder Instability Delphi Consensus Group

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