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@article{Amis:2021:10.1007/s00167-021-06772-9,
author = {Amis, A and Bartolo, MK and Accardi, M and Williams, A and Newman, S and Provaggi, E and Dini, D and Athwal, K},
doi = {10.1007/s00167-021-06772-9},
journal = {Knee Surgery Sports Traumatology Arthroscopy},
title = {Strength of interference screw fixation of meniscus prosthesis matches native meniscus attachments},
url = {http://dx.doi.org/10.1007/s00167-021-06772-9},
volume = {30},
year = {2021}
}
TY - JOUR
AB - PurposeMeniscal surgery is one of the most common orthopaedic surgical interventions. Total meniscus replacements have been proposed as a solution for patients with irreparable meniscal injuries. Reliable fixation is crucial for the success and functionality of such implants. The aim of this study was to characterise an interference screw fixation system developed for a novel fibre-matrix-reinforced synthetic total meniscus replacement in an ovine cadaveric model.MethodsTextile straps were tested in tension to failure (n = 15) and in cyclic tension (70–220 N) for 1000 cycles (n = 5). The textile strap-interference screw fixation system was tested in 4.5 mm-diameter single anterior and double posterior tunnels in North of England Mule ovine tibias aged > 2 years using titanium alloy (Ti6Al4Va) and polyether-ether-ketone (PEEK) screws (n ≥ 5). Straps were preconditioned, dynamically loaded for 1000 cycles in tension (70–220 N), the fixation slippage under cyclic loading was measured, and then pulled to failure.ResultsStrap stiffness was at least 12 times that recorded for human meniscal roots. Strap creep strain at the maximum load (220 N) was 0.005 following 1000 cycles. For all tunnels, pull-out failure resulted from textile strap slippage or bone fracture rather than strap rupture, which demonstrated that the textile strap was comparatively stronger than the interference screw fixation system. Pull-out load (anterior 544 ± 119 N; posterior 889 ± 157 N) was comparable to human meniscal root strength. Fixation slippage was within the acceptable range for anterior cruciate ligament graft reconstruction (anterior 1.9 ± 0.7 mm; posterior 1.9 ± 0.5 mm).ConclusionThese findings show that the textile attachment-interference screw fixation system provides reliable fixation for a novel ovine meniscus implant, supporting
AU - Amis,A
AU - Bartolo,MK
AU - Accardi,M
AU - Williams,A
AU - Newman,S
AU - Provaggi,E
AU - Dini,D
AU - Athwal,K
DO - 10.1007/s00167-021-06772-9
PY - 2021///
SN - 0942-2056
TI - Strength of interference screw fixation of meniscus prosthesis matches native meniscus attachments
T2 - Knee Surgery Sports Traumatology Arthroscopy
UR - http://dx.doi.org/10.1007/s00167-021-06772-9
UR - https://link.springer.com/article/10.1007%2Fs00167-021-06772-9
UR - http://hdl.handle.net/10044/1/92619
VL - 30
ER -