Bone Mesenchymal Stem Cells Contribute to Ligament Regeneration and Graft–Bone Healing after Anterior Cruciate Ligament Reconstruction with Silk–Collagen Scaffold

Figure 5

At 4 weeks after surgery, HE staining of grafts in the knee cavity in the S group (a) revealed few cells, whereas considerable cells were observed in the core part of the graft in the S/C group (b). At 16 weeks after surgery, fibroblast-like cells became more regular and denser in the S/C group (d) than in the S group (c).