Time

Hip number

Pain score

Harris score

Before the treatment

74

5.1 ± 1.1 (3 - 9)

77.4 ± 3.6 (74 - 89)

6 months

74

4.3 ± 0.9 (1 - 6)

84.4 ± 1.1 (83 - 92)

12 months

74

2.1 ± 0.7 (0 - 6)*

94.1 ± 2.8 (82 - 100)*

24 months

74

2.1 ± 0.5 (0 - 10)*

93.9 ± 2.7 (80 - 100)*

36 months

58

0.7 ± 0.2 (0 - 2)

98.8 ± 2.0 (95 - 100)

Statistic

-

F = 144.11

P < 0.05

F = 338.24

P < 0.05