Fig. 3

Histological analysis using H&E staining to assess healing outcome at 1 month after surgery. A Schematic diagram illustrating the experimental design. B H&E analysis revealing the evaluation of tendon healing outcomes. The tendon extracellular matrix (ECM) scaffold group demonstrated the presence of regenerative tissue with a well-aligned structure resembling that of a healthy tendon. In contrast, in both the suture repair and acellular dermal matrix (ADM)-mediated repair groups, a disorganized tissue structure with increased cellularity was observed, compared to the organized architecture seen in the healthy tendon group