Fig. 5From: Successful treatment of a fracture of a huge Achilles tendon ossification with autologous hamstring tendon graft and gastrocnemius fascia flap: a case reportHematoxylin and eosin staining of the ossified tendon. Collagenous tendon tissue underwent cartilaginous metaplasia (✽) and was gradually replaced by lamellar bone with fatty bone marrow (a). In some areas, the surface of the lamellar bone was covered by a number of osteoblasts (arrow), suggesting vigorous osteoblastic activity (b). Magnification, ×40 (a) and × 400 (b)Back to article page