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Related Experiment Videos

Meniscal substitutes--human experience.

E M Goble1, D Kohn, R Verdonk

  • 1Western Orthopedics & Sports Medicine, Logan, Utah, USA.

Scandinavian Journal of Medicine & Science in Sports
|June 25, 1999
PubMed
Summary

Meniscus allograft transplantation can reduce pain and improve activity levels, but long-term benefits require further study. Graft healing is common, though outcomes vary, and protection of knee cartilage remains unproven.

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Area of Science:

  • Orthopedic Surgery
  • Regenerative Medicine
  • Biomaterials Science

Background:

  • Meniscus loss due to injury or disease leads to disabling knee pain.
  • Meniscus allografts and autografts are explored as potential replacements.
  • Current evidence on long-term efficacy and cartilage protection is limited.

Purpose of the Study:

  • To review clinical series on meniscus allograft replacement.
  • To evaluate graft healing, patient outcomes, and potential complications.
  • To assess the role of meniscal substitutes in protecting articular cartilage.

Main Methods:

  • Review of clinical series describing meniscus allograft replacement in skeletally mature individuals.
  • Analysis of graft healing (capsular attachment, revascularization, cell repopulation).

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  • Evaluation of patient-reported outcomes (pain, activity levels) and graft survival.

    • Main Results:

    • Graft healing to the capsule occurs in up to 80% of transplants.
    • Revascularization and cell repopulation are variable.
    • Short-term pain reduction and increased activity are common, but gains may diminish over time.
    • Irradiated grafts and advanced osteoarthritis increase failure risk.
    • Quadriceps tendon autografts show limited meniscal morphology transformation.
    • Immune responses to allografts are observed but clinical significance is unknown.

    Conclusions:

    • Meniscus allografts show promising short-term results for post-meniscectomy pain.
    • Long-term benefits and cartilage protection by meniscal substitutes remain unproven.
    • Further controlled, randomized prospective studies are needed to define indications and confirm long-term efficacy.