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Updated: Jan 25, 2026
10:32
Using Q Suture to Enhance Resistance to Gap Formation and Tensile Strength of Repaired Flexor Tendons
Published on: June 3, 2020
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Rotator cuff tendon tissue cut-through comparison between 2 high-tensile strength sutures
Brett D Owens1, Joseph Algeri2, Vivian Liang2
1Department of Orthopaedic Surgery, Warren Alpert School of Medicine, Brown University, Providence, RI, USA.
Journal of Shoulder and Elbow Surgery
|May 16, 2019
Summary
Dynacord suture caused less tendon cut-through than FiberWire in rotator cuff repairs. This finding is crucial for preventing mechanical failure in tendon surgeries.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
- Musculoskeletal Research
Background:
- High-tensile strength sutures can cause mechanical failure by cutting through tendon tissue during rotator cuff repairs.
- Suture-induced tendon damage, or 'cheese-wiring,' is a significant concern in orthopedic surgery.
- Evaluating novel suture materials is essential for improving surgical outcomes.
Purpose of the Study:
- To compare the tendon-cutting potential of Dynacord suture versus FiberWire suture.
- To assess suture performance in a controlled laboratory setting using ovine rotator cuff models.
- To determine if Dynacord or FiberWire causes less tissue damage during cyclic loading.
Main Methods:
- Seven pairs of ovine shoulders were used, with Dynacord and FiberWire sutures (USP size No. 2) passed through infraspinatus tendons.
- Samples underwent 1000 cycles of cyclic testing to simulate surgical stress.
- The amount of tendon cut-through was measured, with >5 mm defined as clinical failure.
Main Results:
- Dynacord sutures resulted in significantly less tendon cut-through (2.69 ± 1.02 mm) compared to FiberWire sutures (3.72 ± 1.14 mm) (P = .012).
- In matched-pair analysis, FiberWire showed greater cut-through in 13 of 14 specimens.
- Two FiberWire specimens exhibited complete tendon cut-through (>5 mm), indicating clinical failure.
Conclusions:
- Dynacord suture demonstrated superior performance by causing less tendon cut-through than FiberWire in an ovine rotator cuff model.
- The findings suggest Dynacord may reduce the risk of mechanical failure associated with suture pull-through.
- Further clinical studies are warranted to evaluate patient outcomes and healing rates with Dynacord suture.
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