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Related Concept Videos

The Extracellular Matrix01:29

The Extracellular Matrix

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Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
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Feasibility of Ultrasound-Guided Hydrodissection for Tenolysis of Adhesions Following Digital Flexor Tendon Repair.

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Flowable Extracellular Matrix Hydrogel to Prevent Adhesion Formation Following Flexor Tendon Repair: A Preclinical

P Alex Smith1, Timothy J Keane1, Frida K Montoya1

  • 1. TYBR Health, Inc., Houston, TX.

Plastic and Reconstructive Surgery
|March 11, 2026
PubMed
Summary

Extracellular matrix (ECM) hydrogel and mesh reduce adhesions and improve range of motion after flexor tendon repair. These novel biomaterials offer a promising solution for better clinical outcomes and usability.

Keywords:
Flexor tendon repairadhesion barrierextracellular matrixjoint mechanicspreclinical study

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Regenerative Medicine

Background:

  • Adhesion formation post-flexor tendon repair is a major clinical issue, often requiring revision surgery and resulting in poor functional recovery.
  • Existing adhesion barrier technologies demonstrate limited effectiveness and practical application challenges.

Purpose of the Study:

  • To evaluate the efficacy of a flowable extracellular matrix (ECM) hydrogel and ECM mesh in mitigating adhesions following flexor tendon repair.
  • To assess the safety and mechanical properties of these ECM-based barriers in preclinical models.

Main Methods:

  • A preclinical rabbit model was used to assess flexor tendon repair with ECM hydrogel and mesh treatments versus saline controls.
  • Key outcome measures included range of motion (ROM), adhesion scoring, rupture strength, and histological evaluation of inflammation.
  • Cadaveric models were utilized to evaluate safety and effects of overapplication.

Main Results:

  • Both ECM hydrogel and mesh significantly reduced adhesions and improved ROM compared to saline controls (p<0.05).
  • Treated tendons showed improved adhesion scores, with the 1:1 Gel formulation yielding the best results (5.2±1.8 vs. control 8.0±1.5).
  • Histological analysis indicated reduced sustained inflammation, and no adverse effects on tendon rupture strength were observed, confirming safety.

Conclusions:

  • Flowable ECM hydrogel and ECM mesh are effective in significantly reducing adhesions and preserving tendon mechanics after flexor tendon repair.
  • The flowable hydrogel formulation presents enhanced ease of application, addressing critical unmet clinical needs in tendon repair management.