Number

Patients

Sex

Side

Tönnis grade

Age at Operation

(months)

Age La.

F-U

(months)

Time

F-U

(months)

Boy

Girl

Left

Right

Bilateral

Tön. 3

(Hips)

Tön. 4

(Hips)

Variant 1

115

25

90

80

21

14

28

101

14.4

(12 - 18)

69.7

(58 - 102)

41.8

(31 - 52)

129 Hips

Variant 2

61

17

44

43

10

8

18

51

29.6

(19 - 36)

74.4

(72 - 115)

40.2

(32 - 53)

69 Hips

176

42

134

123

31

22

46

152

22

(12 - 36)

72.1

(58 - 115)

41

(32 - 53)

198 Hips