Bone defect animal models for testing efficacy of bone substitute biomaterials

Area of Science:

• Orthopedics
• Biomaterials Science
• Regenerative Medicine

Background:

• Large bone defects from trauma, infection, or congenital disorders necessitate bone defect repair using biomaterials.
• Biomaterial evaluation requires robust in vitro and in vivo testing models to assess biocompatibility, mechanical properties, and host tissue interaction.
• In vivo models are critical preclinical steps between in vitro studies and human clinical trials for bone defect repair.

Purpose of the Study:

• To review and discuss commonly used animal models for testing bone defect repair biomaterials.
• To introduce surgical protocols for establishing preclinical bone defect models in various animal species.
• To outline evaluation methodologies for bone regeneration after biomaterial implantation.

Main Methods:

• Literature review of available and commonly used bone defect animal models.
• Compilation of surgical protocols for creating preclinical bone defect models.
• Summary of evaluation techniques for bone regeneration in animal studies.

Main Results:

• Identified and discussed various bone defect animal models suitable for biomaterial testing.
• Detailed surgical procedures for establishing relevant preclinical models.
• Presented methodologies for assessing bone regeneration efficacy of bone substitutes.

Conclusions:

• Clinically relevant in vivo bone defect animal models are essential for validating bone substitute biomaterials.
• Standardized surgical protocols and evaluation methods are key for reliable preclinical orthopedic research.
• This review serves as a reference for developing and selecting appropriate animal models in translational orthopedics.