Table 2 Comparison of PRP and corticosteroid groups during a 3-month follow-up.

VAS**

6.66 ± 2.26

5.36 ± 1.89

3.75 ± 2.15

3.08 ± 2.14

5.53 ± 1.80

4.86 ± 1.99

3.84 ± 2.07

3.88 ± 1.99

0.023

3.868

0.670

Flexion—degrees**

116.90 ± 37.58

118.40 ± 40.03

132.73 ± 39.06

139.50 ± 34.6

135.42 ± 35.70

139.42 ± 36.80

140.09 ± 36.98

148.65 ± 34.5

0.112

2.326

0.041

Extension—degrees**

35.16 ± 10.78

37.50 ± 10.40

46.16 ± 11.19

50.33 ± 9.18

41.42 ± 10.87

42.69 ± 13.05

50.76 ± 9.02

52.50 ± 8.15

0.302

1.220

0.022

Abduction—degrees**

102.83 ± 36.07

107.43 ± 37.19

115.66 ± 36.75

141.83 ± 36.04

118.46 ± 41.43

119.61 ± 41.10

127.50 ± 43.68

138.26 ± 40.24

0.081

2.572

0.045

Adduction—degrees**

20.50 ± 8.23

21.16 ± 8.37

26.50 ± 4.57

28 ± 3.61

23.21 ± 7.09

26.53 ± 6.28

27.69 ± 4.73

28.46 ± 4.18

0.011

5.087

0.086

Internal rotation—degrees**

64.26 ± 17.06

68.50 ± 17.12

78.50 ± 13.3

82.16 ± 10.39

60.17 ± 19.41

63.84 ± 22.64

77.50 ± 15.18

79.61 ± 13.55

0.741

0.333

0.006

External rotation—degrees**

59.66 ± 23.81

65.83 ± 23.12

74.83 ± 20.36

76.66 ± 18.30

57.14 ± 24.69

60.19 ± 26.81

64.03 ± 26.42

65.57 ± 26.39

0.036

3.475

0.060

WORC score**

32.85 ± 19.43

40.66 ±18.76

49.93 ± 22.36

35.56 ± 17.97

44.87 ± 21.59

48.46 ± 20.60

0.315

1.166

0.021

DASH score**

54.02 ± 18.24

48.83 ± 13.53

40.83 ± 18.19

52.50 ± 20.32

44.77 ± 17.89

41.05 ± 15.69

0.520

0.658

0.012

Supra-spinatus thickness—mm*

6.97 ± 1.46

6.36 ± 1.06

7.47 ± 1.38

7.40 ± 1.07

0.119

2.509

0.044