Knotless vs. Knotted Suture Anchors: Biomechanical Precision Meets Surgical Efficiency — The Auxein Anchor Spectrum

Overview

Suture anchor technology has evolved significantly, shifting from traditional knotted systems to advanced knotless and hybrid designs. At Auxein Medical, this evolution is reflected in our comprehensive AUXILOCK series — providing solutions across every fixation philosophy, from Titanium to All Suture Anchors and from suture-based simplicity to next-generation knotless constructs.

Auxein Perspective — Precision for Every Procedure

Auxein’s fixation philosophy centers around precision, predictability, and biomechanical strength. Whether surgeons prefer the tactile control of knotted constructs or the efficiency of knotless systems, the Auxein anchor ecosystem ensures superior outcomes and adaptable fixation strategies.

Knotless vs. Knotted Suture Anchors
Figure 1 Pull-out Strength Comparison (N)
Figure 2 Surgical Time Comparison
Figure 3 Complication Distribution Across Anchor

Advantages of Knotless Anchors

  • Elimination of knot impingement
  • Reduced surgical time and complexity
  • Even suture tensioning across fixation points
  • Simplified revision surgery
  • Decreased tissue irritation and knot abrasion

Advantages of Knotted Anchors

  • Greater tactile feedback and manual control
  • Ideal for multi-layer tissue repair
  • Strong compression for secure fixation
  • Familiar handling for traditional techniques

Clinical Comparison Summary

Parameter

Knotted Anchors

Knotless Anchors

Pull-Out Strength (N)

≈ 265

≈ 275

Surgical Time

Longer (manual tying)

Shorter (push-in/screw-in)

Tissue Irritation

Moderate

Minimal

Revision Simplicity

Moderate

Easy

Surgeon Control

High

Automated Tension

Cost

Lower

Slightly Higher

Complication Rate

15–20%

5–8%

Conclusion: The Auxein Vision

Auxein’s expansive AUXILOCK® portfolio offers surgeons the flexibility to choose — or combine — knotted and knotless systems for each case’s unique requirements. Through meticulous design using Titanium, PEEK CF, PEEK OPTIMA and All Suture Anchors Auxein continues to lead the evolution of soft-tissue fixation. The result: fixation that’s not just mechanical, but biomechanically intelligent.

Key References

  • Liu S, Ma L. (2025). Arthroscopic suture-bridge repair using knotless anchors. J Orthop Surg Res.
  • Barber FA et al. (2023). Anchor performance and fixation comparison. J Shoulder Elbow Surg.
  • Kim YJ et al. (2022). Knotless versus knotted fixation systems. Arthroscopy.
  • Kummer F et al. (2019). Biomechanics of rotator cuff anchor systems. AJSM.
  • Burkhart SS et al. (2021). Knotted vs knotless outcomes in shoulder repair. Arthroscopy Journal.