Table 2 Surgical protocol and postoperative outcomes

Types of operations

χ² = 0.148

0.700^a

Bone grafting

5

10

Bone grafting + additional plate

11

17

Bone grafting materials

DMB + PRP

11

DMB + PRP + allograft

5

Autologous iliac bone

27

Immediate postoperative complications

Prolonged drainage

6

11

χ² = 0.044

0.834^a

Exudation

2

3

χ² = 0.000

1.000 ^b

Delayed incision healing

2

4

χ² = 0.000

1.000^b

Subcutaneous hematoma

1

0.372^c

Donor site complications

3

0.282^c

Bony healing time (months), mean ± SD

7.533 ± 3.357

6.625 ± 2.516

t=0.964

0.341^d

Recurrence of bone non-union

1

3

χ² = 0.000

1.000^b