Fig. 7
From: Remnants-preserving ACL reconstruction using direct tendinous graft fixation: a new rat model
NA and FA tibial histological sections of a specimen implanted with the autograft. A NA section: The fibrous interface (FI, bi-headed arrow) is visible between the autograft (AG) and the bone (B). Also note the peripheral neovascularization area (arrowheads). B FA section: Direct graft-to-bone contact is visible without fibrous tissue interface. Note the absence of visible vessels and the low cellularity within the autograft. SH: screw hole. Both images show cortico-cancellous bone formation surrounding the autograft and screw hole. Stevenel’s blue and picrofuchsin staining. Bone, cells, and autograft stained pink, blue, and brown, respectively. Scale bars: 200 µm