Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 2 Lane and Sandhu histopathological scoring system modified by Heiple et al. [28]
Union (proximal and distal evaluated separately) | |
No evidence of union | 0 |
Fibrous union | 1 |
Osteochondral union | 2 |
Bone union | 3 |
Complete organization of shaft | 4 |
Cancellous bone | |
No osseous cellular activity | 0 |
Early apposition of new bone | 1 |
Active apposition of new bone | 2 |
Reorganizing cancellous bone | 3 |
Complete reorganization of cancellous bone | 4 |
Cortical bone | |
Non | 0 |
Early appearance | 1 |
Formation under way | 2 |
Mostly reorganized | 2 |
Completely formed | 10 |
Marrow | |
None is resected area | 0 |
Beginning to appear | 1 |
Present in more than half of the defect | 2 |
Complete colonization by red marrow | 3 |
Mature fatty marrow | 4 |
Total points possible per category | |
Proximal union | 4 |
Distal union | 4 |
Cancellous bone | 4 |
Cortex | 4 |
Marrow | 4 |
Maximum score | 20 |