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Mansoura Veterinary Medical Journal

Document Type

Original Article

Keywords

Platelet Rich Fibrin, superficial flexor tendon, Chitosan

Abstract

Objective: To investigate the effects of platelet-rich fibrin (PRF) and chitosan (Ch) on the healing of superficial digital flexor tendon (SDFT) defects in a donkey model.

Design: Randomized experimental study.

Animals: Eighteen clinically healthy male donkeys. A full-thickness defect of the SDFT was performed at the mid-metatarsus, and tenorrhaphy was performed, leaving a 1 cm defect. The animals were allocated into three groups (six animals per group). Group I (control group): no biomaterials were added; Group II (PRF group): the SDFT gap was filled with autogenous PRF; Group III (PRF/Ch group): a combination of PRF and chitosan was used to fill the SDFT gap. Ultrasonographic examinations were performed at 1, 2, and 3 months postoperatively, and the imaging characteristics were compared at each time point.

Results: The PRF and PRF/Ch groups showed significant (P>0.00) improvements in tendon echogenicity, fiber alignment, and thickness compared with the control group. In the PRF-and PRF/Ch-treated groups, SDFT showed a well oriented tendon fibers with normal thickness and normal crescent shape.

Conclusion and clinical relevance: Based on tendon echogenicity, fiber alignment, position, and thickness, PRF and chitosan can improve tendon healing and could provide a new bioscaffold-based strategy for SDFT regeneration in donkeys.

Receive Date

June 27, 2021

Accept Date

January 1, 2022

Publication Date

2023

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