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Fidelis et al: Effect of suture anchor type, eyelet configuration, and loading condition on suture failure: An in vitro study
Veterinary Surgery 6, 2025

🔍 Key Findings

  • Raised eyelets caused more suture mid-section failures than embedded eyelets, suggesting wear or cutting against the anchor.
  • No significant effect of cyclic loading on failure load (Fmax) was found for any anchor group.
  • Anika anchor showed the least reduction in suture strength relative to the reference (eyebolt screw), indicating a favorable design.
  • All sutures failed via suture breakage, not anchor pullout, indicating suture fatigue was the primary failure mode.
  • Sutures in raised eyelets more often failed at the mid-section, while those in embedded eyelets failed at the knot.
  • IMEX and Jorvet anchors showed significantly reduced Fmax compared to eyebolt screws.
  • Loading direction and anchor design likely affect wear and ultimate failure, particularly in dynamic in vivo conditions.
  • Future designs should aim for embedded, smooth eyelets that can accommodate larger suture sizes without increasing wear.

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← Articles

Fidelis et al: Effect of suture anchor type, eyelet configuration, and loading condition on suture failure: An in vitro study
Veterinary Surgery 6, 2025

🔍 Key Findings

  • Raised eyelets caused more suture mid-section failures than embedded eyelets, suggesting wear or cutting against the anchor.
  • No significant effect of cyclic loading on failure load (Fmax) was found for any anchor group.
  • Anika anchor showed the least reduction in suture strength relative to the reference (eyebolt screw), indicating a favorable design.
  • All sutures failed via suture breakage, not anchor pullout, indicating suture fatigue was the primary failure mode.
  • Sutures in raised eyelets more often failed at the mid-section, while those in embedded eyelets failed at the knot.
  • IMEX and Jorvet anchors showed significantly reduced Fmax compared to eyebolt screws.
  • Loading direction and anchor design likely affect wear and ultimate failure, particularly in dynamic in vivo conditions.
  • Future designs should aim for embedded, smooth eyelets that can accommodate larger suture sizes without increasing wear.

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Multiple Choice Questions on this study

In Fidelis 2025 et al., on suture eyelet geometry, which anchor showed the **least reduction in suture strength** compared to a smooth eyebolt reference?

A. IMEX
B. Arthrex
C. Jorvet
D. Anika
E. TribeVet

Answer: Anika

Explanation: The Anika anchor had significantly lower adverse impact on suture strength compared to others.
In Fidelis 2025 et al., on suture eyelet geometry, what was the **most common failure location** for sutures in anchors with embedded eyelets?

A. Suture breakage at mid-section
B. Suture pullout from bone
C. Anchor deformation
D. Suture breakage at knot
E. Anchor detachment from block

Answer: Suture breakage at knot

Explanation: All embedded eyelet anchor failures occurred at the suture knot, suggesting reduced suture wear.
In Fidelis 2025 et al., on suture eyelet geometry, which two anchors most frequently showed **suture failure at the mid-section**?

A. Arthrex and Anika
B. Jorvet and IMEX
C. Arthrex and IMEX
D. Anika and Jorvet
E. TribeVet and Arthrex

Answer: Jorvet and IMEX

Explanation: Sutures in raised eyelet anchors (Jorvet and IMEX) commonly failed at the mid-section, indicating cutting or abrasion.
In Fidelis 2025 et al., on suture eyelet geometry, what was the **primary mode of failure** observed across all tests?

A. Suture slippage through eyelet
B. Anchor pull-out from bone
C. Suture breakage
D. Anchor deformation
E. Anchor fracture

Answer: Suture breakage

Explanation: All failures were due to suture breakage; no anchor pull-out or anchor deformation was reported.
In Fidelis 2025 et al., on suture eyelet geometry, what effect did **cyclic loading** have on maximum failure load (Fmax)?

A. Cyclic loading increased Fmax
B. Cyclic loading significantly decreased Fmax
C. No effect of cyclic loading on Fmax
D. Cyclic loading increased mid-section failures
E. Cyclic loading caused anchor pullout

Answer: No effect of cyclic loading on Fmax

Explanation: Cyclic loading did not significantly alter failure load in any anchor-suture group.

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