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Table 1 Radiographic grading system [23]

From: Autologous platelet-rich plasma induces bone formation of tissue-engineered bone with bone marrow mesenchymal stem cells on beta-tricalcium phosphate ceramics

Grading items Score
Periosteal reactiona
 None 0
 Minimal (localized to the gap) 1
 Medium (extends over the gap; < 1/4) 2
 Moderate (< 1/2 but > 3/4) 3
 Full 4
Osteotomy sitea
 Osteotomy line completely radiolucent 0
 Osteotomy line partially radiolucent 2
 Osteotomy line invisible 4
Remodelinga
 None apparent 0
 Intramedullary space 1
 Intracortical 2
Graft appearancea
 Unchanged/intact 0
 Mild resorption 1
 Moderate replacement 2
 Mostly replaced 3
 Fully reorganized 4
  1. aProximal, distal, and central part of graft scored individually