Study

Case

O/C

Sex ratio

(M/F)

Mean age

(O/C) (years)

Follow-up

(months)

Jadad

scores

Fjalestad 2012 [16]

25/25

6/44

72.2/73.1

12

6

Olerud 2011 [17]

30/29

10/48

72.9/74.9

24

6

Zyto 1997 [18]

20/20

5/35

73/75

50

6

O/C: ORIF group/Conservative group; M/F: Male/Female