Table 3 The VAS and ROM in the two groups

 Preop

5.1 ± 0.7

5.3 ± 0.8

0.421

 Postop 1 month

3.4 ± 0.7

4.5 ± 1.1

0.032

 Postop 6 months

3.1 ± 0.8

4.1 ± 0.9

0.043

 Postop 12 months

2.8 ± 1.2

2.9 ± 1.1

0.072

 Postop 24 months

2.3 ± 0.8

2.4 ± 0.7

0.771

 Postop 36 months

2.1 ± .7

2.2 ± 1.1

0.881

 Preop

97.8 ± 8.9

97.1 ± 6.7

0.615

 Postop 1 month

103.9 ± 7.4

98.6 ± 7.3

0.034

 Postop 6 months

105.1 ± 5.4

100.8 ± 7.7

0.041

 Postop 12 months

106.3 ± 7.8

104.1 ± 8.2

0.064

 Postop 24 months

109.9 ± 6.8

108.6 ± 7.3

0.525

 Postop 36 months

112.9 ± 7.8

110.2 ± 7.2

0.846