A Rabbit Femoral Condyle Defect Model for Assessment of Osteochondral Tissue Regeneration. 2020

Jason L Guo, and Yu Seon Kim, and Elysse A Orchard, and Jeroen J J P van den Beucken, and John A Jansen, and Mark E Wong, and Antonios G Mikos
Department of Bioengineering, Rice University, Houston, Texas, USA.

Osteochondral tissue repair represents a common clinical need, with multiple approaches in tissue engineering and regenerative medicine being investigated for the repair of defects of articular cartilage and subchondral bone. A full thickness rabbit femoral condyle defect is a clinically relevant model of an articulating and load bearing joint surface for the investigation of osteochondral tissue repair by various cell-, biomolecule-, and biomaterial-based implants. In this protocol, we describe the methodology and 1.5- to 2-h surgical procedure for the generation of a reproducible, full thickness defect for construct implantation in the rabbit medial femoral condyle. Furthermore, we describe a step-by-step procedure for osteochondral tissue collection and the assessment of tissue formation using standardized histological, radiological, mechanical, and biochemical analytical techniques. This protocol illustrates the critical steps for reproducibility and minimally invasive surgery as well as applications to evaluate the efficacy of cartilage and bone tissue engineering implants, with emphasis on the usage of histological and radiological measures of tissue growth. Impact statement Although multiple surgical techniques have been developed for the treatment of osteochondral defects, repairing the tissues to their original state remains an unmet need. Such limitations have thus prompted the development of various constructs for osteochondral tissue regeneration. An in vivo model that is both clinically relevant and economically practical is necessary to evaluate the efficacy of different tissue engineered constructs. In this article, we present a full thickness rabbit femoral condyle defect model and describe the analytical techniques to assess the regeneration of osteochondral tissue.

UI MeSH Term Description Entries
D010012 Osteogenesis The process of bone formation. Histogenesis of bone including ossification. Bone Formation,Ossification, Physiologic,Endochondral Ossification,Ossification,Ossification, Physiological,Osteoclastogenesis,Physiologic Ossification,Endochondral Ossifications,Ossification, Endochondral,Ossifications,Ossifications, Endochondral,Osteoclastogeneses,Physiological Ossification
D011817 Rabbits A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes. Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D012038 Regeneration The physiological renewal, repair, or replacement of tissue. Endogenous Regeneration,Regeneration, Endogenous,Regenerations
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D005269 Femur The longest and largest bone of the skeleton, it is situated between the hip and the knee. Trochanter,Greater Trochanter,Lesser Trochanter,Femurs,Greater Trochanters,Lesser Trochanters,Trochanter, Greater,Trochanter, Lesser,Trochanters,Trochanters, Greater,Trochanters, Lesser
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001696 Biomechanical Phenomena The properties, processes, and behavior of biological systems under the action of mechanical forces. Biomechanics,Kinematics,Biomechanic Phenomena,Mechanobiological Phenomena,Biomechanic,Biomechanic Phenomenas,Phenomena, Biomechanic,Phenomena, Biomechanical,Phenomena, Mechanobiological,Phenomenas, Biomechanic
D014945 Wound Healing Restoration of integrity to traumatized tissue. Healing, Wound,Healings, Wound,Wound Healings
D055114 X-Ray Microtomography X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range. MicroCT,Microcomputed Tomography,X-Ray Micro-CAT Scans,X-Ray Micro-CT,X-Ray Micro-CT Scans,X-Ray Micro-Computed Tomography,X-Ray Microcomputed Tomography,X-ray MicroCT,Xray Micro-CT,Xray MicroCT,Micro-CAT Scan, X-Ray,Micro-CAT Scans, X-Ray,Micro-CT Scan, X-Ray,Micro-CT Scans, X-Ray,Micro-CT, X-Ray,Micro-CT, Xray,Micro-CTs, X-Ray,Micro-CTs, Xray,Micro-Computed Tomography, X-Ray,MicroCT, X-ray,MicroCT, Xray,MicroCTs,MicroCTs, X-ray,MicroCTs, Xray,Microcomputed Tomography, X-Ray,Microtomography, X-Ray,Scan, X-Ray Micro-CAT,Scan, X-Ray Micro-CT,Scans, X-Ray Micro-CAT,Scans, X-Ray Micro-CT,Tomography, Microcomputed,Tomography, X-Ray Micro-Computed,Tomography, X-Ray Microcomputed,X Ray Micro CAT Scans,X Ray Micro CT,X Ray Micro CT Scans,X Ray Micro Computed Tomography,X Ray Microcomputed Tomography,X Ray Microtomography,X ray MicroCT,X-Ray Micro-CAT Scan,X-Ray Micro-CT Scan,X-Ray Micro-CTs,X-ray MicroCTs,Xray Micro CT,Xray Micro-CTs,Xray MicroCTs

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