Biomechanical comparison of all-inside meniscal suture configurations for posterior root tear: Three conventional stitches versus delta-grip stitch

IF 2 Q2 ORTHOPEDICS Journal of Experimental Orthopaedics Pub Date : 2025-01-22 DOI:10.1002/jeo2.70149

Kyohei Ishibashi, Kyota Ishibashi, Takahiro Tsushima, Eiji Sasaki, Shohei Yamauchi, Yuka Kimura, Yasuyuki Ishibashi

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Abstract

Purpose

This study aimed to compare the biomechanical properties of four meniscal suture configurations—two simple sutures (TSS), two cinch sutures, a locking loop stitch (LLS), and a delta-grip stitch (DGS)—for transtibial pullout repair of medial meniscus posterior root tears (MMPRTs) using porcine menisci.

Methods

Forty porcine menisci were randomly assigned to each suture configuration with all-inside repair. All specimens were subjected to cyclic loading for 1000 cycles, followed by a load-to-failure test. We evaluated displacement after cyclic loading, the ultimate failure load and the mode of failure.

Results

No significant differences in displacement were observed between the configurations (p = 0.709). The DGS exhibited significantly higher ultimate failure loads (281.4 ± 53.5 N) compared to TSS (166.8 ± 84.5 N) and the LLS (119.7 ± 46.7 N) (p = 0.006 and p < 0.001, respectively). Suture breakage was observed in the DGS group, while meniscus cutout was observed in the other suture configuration models.