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Table 2 Histopathological scoring used in the evaluation of fracture healing

From: Grape seed extract supplement increases bone callus formation and mechanical strength: an animal study

Score Histological findings in the fracture area
1 Fibrous tissue
2 A large amount of fibrous tissue and a small proportion of cartilage tissue
3 An equal amount of fibrous tissue and cartilage tissue
4 Cartilage tissue
5 A large amount of cartilage tissue and a small amount of immature (woven) bone tissue
6 Equal ratio of cartilage tissue and immature bone tissue
7 A large amount of bone tissue and a small proportion of cartilage tissue
8 Fully immature (woven) bone
9 Immature bone and a small amount of mature bone
10 Mature (lamellar) bone