Table 4 Comparison of the results at different postoperative periods in the patient groups with Grade I, II and III displacement

mRUSF (3 months) (S.D.)

7.0 (1.4)

5.3 (1.5)

4.8 (1.3)

< 0.001*

mRUSF (6 months) (S.D.)

9.0 (1.7)

6.8 (2.0)

6.1 (1.9)

< 0.001*

mRUSF (9 months) (S.D.)

11.1 (2.1)

8.3 (2.6)

7.6 (2.4)

< 0.001*

mRUSF (12 months) (S.D.)

12.7 (2.2)

9.4 (2.8)

8.9 (2.6)

< 0.001*

Union rate/%

89.3

46.2

28.6

< 0.001*

Mean union time (month) (S.D.)

7.7 (2.2)

8.6 (1.5)

13.5 (1.6)

< 0.001*