Table 1 Characteristics and clinical data of 14 patients

Age (year)

18–56

Male/Female (No.)

11/3

Site (femur/tibia) (No.)

7/7

BMI (kg/m²)

22.44 ± 1.53

 AO 32 A1/A2/A3

1/1/1

 AO 32 B2/B3

1/1

 AO 32 C2/C3

0/2

 AO 42 A1/A2/A3

0/1/1

 AO 42 B2/B3

1/2

 AO 42 C2/C3

0/2

 Hypertrophic nonunion

3

 Hypotrophic nonunion

9

 Atrophic nonunion

2

Duration of nonunion (month)

9–37

 Past revision frequency 0/1/2/3

7/5/1/1

Total surgery frequency (No.)

38

Final internal fixation change (No.)

10

 Exchange intramedullary nail

1

 Intramedullary nail plus plate

2

 Intramedullary nail to plate

0

 Exchange plate

0

 Plate to intramedullary nail

6

 Plate plus plate

1