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The Nice knot as an improvement on current knot options: A mechanical analysis
P Collin1, E Laubster1, P J Denard2
1Saint-Grégoire Private Hospital Center, boulevard Boutière 6, 35768 Saint-Grégoire cedex, France.
Orthopaedics & Traumatology, Surgery & Research : OTSR
|March 4, 2016
Summary
The new Nice knot reduces suture elongation during dynamic stress in rotator cuff repair compared to the Nicky
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Materials Science
Background:
- Rotator cuff repair involves various suture knot techniques.
- Evaluating novel knot designs is crucial for improving surgical outcomes.
Purpose of the Study:
- To compare the biomechanical performance of the Nice knot against the Nicky's knot.
- To assess knot behavior under different mechanical stresses.
Main Methods:
- Mechanical testing of Nice and Nicky's knots using standard and reinforced braided sutures.
- Evaluation of knot elongation, failure strength, and stiffness under pure traction and dynamic stresses.
Main Results:
- The Nice knot demonstrated significantly reduced elongation under dynamic testing (P<0.001).
- Reinforced sutures showed higher failure strength in pure traction but increased elongation-related failure rates under dynamic stress.
- Standard sutures exhibited less elongation than reinforced sutures during dynamic tests.
Conclusions:
- The Nice knot offers a viable sliding locking knot option for rotator cuff repair.
- This knot design can mitigate the risk of suture elongation, particularly under dynamic loading conditions.
Keywords:
ArthroscopyBiomechanical studyEthibond(®)Mechanical testingNice knotNicky's knotRotator cuff repairShoulder surgerySutureUltrabraidMore Related Videos
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