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Related Experiment Video

Updated: Apr 17, 2026

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects

Published on: December 10, 2021

Looped suture properties: implications for multistranded flexor tendon repair.

R Haddad¹, T Peltz¹, N Bertollo¹

¹Surgical & Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, New South Wales, Australia.

The Journal of Hand Surgery, European Volume

|February 21, 2015

Summary

This summary is machine-generated.

Double-looped sutures offer less than double the strength of single loops but increase stiffness. For flexor tendon repair, compare looped sutures to thicker single sutures for optimal biomechanical strength.

Keywords:

Looped suture biomechanical testing in vitro

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Area of Science:

Orthopedic Surgery
Biomedical Engineering
Materials Science

Background:

Multiple-strand suture techniques are standard for flexor tendon repair to ensure initial biomechanical strength.
Looped sutures offer potential advantages in reduced technical complexity and fewer passes.
The comparative biomechanical performance of looped sutures versus equivalent single-stranded repairs remains unclear.

Purpose of the Study:

To investigate the mechanical properties of double-stranded looped sutures compared to single-stranded sutures.
To evaluate the influence of suture material (braided polyester vs. polypropylene monofilament) and size on repair strength and stiffness.
To provide data for optimizing flexor tendon repair techniques.

Main Methods:

Mechanical testing of double-stranded loops of 3-0 and 4-0 braided polyester (Ticron) and polypropylene monofilament (Prolene).
Comparison of strength and stiffness between double-looped and equivalent single-stranded repairs.
Analysis of the relative effects of suture size and looping on mechanical properties.

Main Results:

Double loops generally yielded less than twice the strength of single loops.
Ticron and Prolene exhibited similar strengths, but Ticron demonstrated greater stiffness.
4-0 double loops showed significantly higher stiffness compared to 3-0 single loops.
Increasing suture size had a greater relative impact on strength than using a double-stranded loop.
Double-strand loops had a more pronounced effect on increasing stiffness than using a larger single suture.

Conclusions:

Looped suture repairs do not necessarily achieve double the strength of single loops.
The increased stiffness from double-looped sutures may be a significant factor in flexor tendon repair.
Future comparisons of looped suture repairs should consider standard techniques utilizing thicker single sutures.