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Related Experiment Videos

Human tissue reaction to sutures.

R W Postlethwait, D A Willigan, A W Ulin

    Annals of Surgery
    |February 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    This study examined tissue reactions to various sutures in 666 patient specimens. Nonabsorbable sutures elicit a connective tissue response, with intensity varying by material, while absorbable sutures show a histiocytic reaction during absorption.

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    Area of Science:

    • Surgical pathology
    • Biomaterials science
    • Histology

    Background:

    • Understanding tissue response to surgical sutures is crucial for optimizing wound healing and minimizing complications.
    • Different suture materials are known to elicit varying degrees of foreign body reaction.
    • Long-term tissue interactions with implanted materials require detailed investigation.

    Purpose of the Study:

    • To comprehensively analyze and characterize the histological tissue reactions to different types of sutures (absorbable and nonabsorbable) in human patients.
    • To compare the inflammatory and foreign body responses elicited by various suture materials over extended postoperative periods.
    • To correlate suture material properties with the observed tissue reactions.

    Main Methods:

    • Histological examination of 666 surgical specimens from patients, with post-operative periods ranging from one day to 23 years.

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  • Microscopic analysis of tissue surrounding sutures to identify cellular infiltration, encapsulation, and foreign body giant cell formation.
  • Categorization of reactions based on suture absorption stage and material type (catgut, silk, cotton, Dacron, nylon, wire).

    • Main Results:

    • Catgut suture reactions varied with absorption stage, predominantly showing a histiocytic response.
    • Nonabsorbable sutures were consistently encapsulated by connective tissue.
    • Cellular infiltration (histiocytes, giant cells, lymphocytes) was observed near nonabsorbable sutures, being most pronounced with silk and cotton, and least with nylon and wire.
    • Tissue infiltration into suture interstices was variable across materials.
    • Observed human tissue reactions mirrored findings in experimental animal models.

    Conclusions:

    • Suture material significantly influences the type and intensity of tissue reaction, impacting long-term biocompatibility.
    • Nonabsorbable sutures provoke a chronic foreign body response characterized by encapsulation and cellular infiltration.
    • The degree of tissue reaction varies considerably among nonabsorbable suture types, with nylon and wire demonstrating the least reactivity.
    • Findings suggest that careful selection of suture material based on its known tissue interaction profile is essential in surgical practice.