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Creating a Prelaminated Chondrocapsular Tissue Model in Composite Defect Reconstruction Accompanied by Cartilage
Yusuf Alper Aytaç1, Emrah Kagan Yasar1, Mustafa Canberk Gürbüz1
1Department of Plastic, Reconstructive and Aesthetic Surgery, Kocaeli University School of Medicine, Izmit, Kocaeli, Turkey.
Background:
Reconstruction of composite tissue defects, particularly those involving cartilage deficiency, remains highly challenging. This study aimed to develop a chondrocapsular tissue by prelaminating avascular cartilage with vascularized capsule tissue to enhance cartilage viability.
Methods:
Twenty-seven rats were divided into three groups. In Group 1, two silicone sheets were implanted around the femoral vessels to induce double-layer capsule formation, followed by insertion of autologous auricular cartilage between the layers. In Group 2, a single silicone sheet was used for capsule induction before cartilage implantation. Group 3 served as the control, with direct cartilage implantation. Vascularity and cartilage viability were assessed using histology and immunohistochemistry.
Results:
Capsule formation occurred only in Groups 1 and 2. Group 2 demonstrated the highest chondrocyte viability, while Group 1 exhibited the strongest neovascularization. Immunohistochemistry (CD31, CD44, Col2A1) confirmed superior vascularity and chondrogenic activity in Groups 1 and 2 compared with Group 3.
Conclusion:
Prelamination of cartilage with vascularized capsule tissue resulted in a viable, vascularized chondrocapsular construct. This model shows potential as a clinically applicable strategy for reconstructing composite tissue defects involving cartilage loss.
