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Related Experiment Video

Updated: Jun 30, 2026

Standardized Histomorphometric Evaluation of Osteoarthritis in a Surgical Mouse Model
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Evaluating Knee Osteoarthritis Induction Methods in Small Translational Animal Models from 1970-2025: A Comprehensive

Armin Arabzadeh1,2, Shervin Mossavarali1,2, Gita Manzari Tavakoli3

  • 1Center for Orthopedic Trans-Disciplinary Applied Research, Tehran University of Medical Sciences, Tehran, Iran.

The Archives of Bone and Joint Surgery
|June 5, 2026
PubMed
Summary

This study reviews various methods for inducing knee osteoarthritis (KOA) in animal models, comparing surgical, chemical, genetic, and mechanical approaches. Findings highlight distinct timelines for osteophyte formation and KOA development across different induction techniques.

Keywords:
Animal modelInduction methodOsteoarthritisRabbitRodentsknee

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Area of Science:

  • Biomedical Science
  • Orthopedics
  • Animal Models

Background:

  • Knee osteoarthritis (KOA) is a debilitating condition requiring robust animal models for research.
  • Various methods exist to induce KOA in preclinical settings, each with unique characteristics.

Purpose of the Study:

  • To systematically review and compare different methods for inducing knee osteoarthritis (KOA) in rabbit and rodent models.
  • To summarize data on KOA development timelines, osteophyte formation, scoring systems, and histopathological findings across various induction approaches.

Main Methods:

  • A systematic literature search was performed on PubMed, Scopus, and Web of Science (1970-Feb 2025).
  • Studies focused on animal models (rabbits, rodents) and KOA induction methods, using the PICO framework.
  • Risk of bias was assessed using Cochrane and ROBINS-I tools.

Main Results:

  • 98 studies were included, analyzing surgical (n=34), chemical (n=15), genetic (n=13), mechanical (n=19), and diet-induced (n=6) models.
  • Anterior cruciate ligament transection (ACLT) and destabilization of the medial meniscus (DMM) were common surgical methods; monosodium iodoacetate (MIA) was a frequent chemical inducer.
  • Osteophyte formation was prominent in surgical and chemical models, typically within 8 weeks, with distinct time courses for KOA development across methods.

Conclusions:

  • Each KOA induction method offers specific advantages for modeling disease pathology.
  • These models facilitate research into KOA mechanisms and the evaluation of therapeutic interventions.