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A Training and Testing System for Performing Vascular Reconstruction In Vitro
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In Vitro Comparison between the Pulvertaft Weave and the Modified Core Suture Pulvertaft Weave.

Kjell Van Royen1, Jorge I Quintero1, Michael Voor2

  • 1Christine M. Kleinert Institute for Hand and Microsurgery, Louisville, KY, USA.

The Journal of Hand Surgery Asian-Pacific Volume
|August 12, 2021
PubMed
Summary

A modified core suture Pulvertaft weave is significantly stronger than the traditional Pulvertaft weave for tendon transfers. This stronger repair may enable earlier active motion protocols following surgery.

Keywords:
Core sutureEarly active motionPulvertaft weaveTendon transfer

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Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Musculoskeletal research

Background:

  • The Pulvertaft weave, a technique used in tendon transfers for over 50 years, is still widely employed.
  • Tendon transfer surgery aims to restore function by rerouting tendons.

Purpose of the Study:

  • To evaluate the biomechanical strength of a modified core suture Pulvertaft weave.
  • To compare the strength of the modified technique against the original Pulvertaft weave in tendon transfers.

Main Methods:

  • Twelve extensor pollicis longus and extensor indices proprius tendons were harvested from fresh frozen cadavers.
  • Six Pulvertaft weaves and six core suture tendon weaves were performed using specialized suture materials.
  • Biomechanical analysis measured stiffness, first failure load, and ultimate failure load for both repair types.

Main Results:

  • The core suture Pulvertaft weave demonstrated significantly higher stiffness (9.5 N/mm vs. 2.5 N/mm) compared to the traditional Pulvertaft weave.
  • First failure load was substantially greater for the core suture technique (68.9 N vs. 19.2 N).
  • Ultimate failure load was also significantly higher for the core suture repair (101.8 N vs. 21.9 N).

Conclusions:

  • The modified core suture Pulvertaft weave represents a stronger alternative to the traditional technique.
  • This cadaveric study suggests the modified weave is approximately five times stronger, potentially facilitating early active motion after tendon transfers.