AI Article Synopsis
- The study aimed to evaluate the impact of suture cutout on the failure mechanics of repaired posterior meniscal roots using different suture shapes in an early post-operative setting.
- Twenty porcine menisci were tested with two types of sutures (thread and tape) under cyclic loading and load-to-failure conditions, measuring key factors like stiffness and ultimate failure load.
- Results showed no significant cutout progression or displacement differences during cyclic tests, but tape sutures demonstrated a higher ultimate load before failure compared to thread sutures.
Article Abstract
Purpose: To assess the role of suture cutout in the mechanics of failure of the repaired posterior meniscal root during the early post-operative period when using sutures of different shape.
Methods: Twenty medial porcine menisci were randomized in two groups depending on the suture shape used to repair the posterior root: thread or tape. The sutured menisci were subjected to cyclic loading (1000 cycles, (10, 30) N) followed by load-to-failure testing. Residual displacements, stiffness, and ultimate failure load were determined. During tests, the tissue-suture interface was recorded using a high-resolution camera.
Results: In cyclic tests, cutout progression at the suture insertion points was not observed for any specimen of either group and no differences in residual displacements were found between use of thread or tape. In load-to-failure tests, suture cutout started in all menisci at a load close to the ultimate failure and all specimens failed by suture pullout. Suture tape had a greater ultimate load with no other differences.
Conclusions: In a porcine model of a repaired posterior meniscal root subjected to cyclic loads representative of current rehabilitation protocols in the early post-operative period under restricted loading conditions, suture cutout was not found as a main source of permanent root displacement when using suture thread or tape. Suture cutout progression started at high loading levels close to the ultimate load of the construct. Tape, with a meniscus-suture contact area larger than thread, produced higher ultimate load.
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| http://dx.doi.org/10.1007/s00264-018-3799-9 | DOI Listing |
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