Table 4 Comparison between study subjects as regard the possible prognostic factors

Nerve (median)

Median nerve

–

22.2

–

–

–

–

Ulnar nerve

–

47.0

–

–

–

–

U

–

71

–

–

–

–

p

–

0.002*

–

–

–

–

Age

r_s

− 0.295

–

–

0.335

− 0.325

− 0.367

p

0.045*

–

–

0.046*

0.040*

0.025*

Smoking

(median)

Yes

23.8

–

1

55

–

3

No

39.4

–

3

24

–

7

U

122

–

17.5

110

–

94.5

p

0.021*

–

0.030*

0.026*

–

0.030*

Compliance to rehabilitation

(median)

Yes

37.5

42.1

–

26

–

7

No

26

22.2

–

61

–

5

U

25.5

16.5

–

12

–

23.5

p

0.015*

0.005*

–

0.009*

–

0.011*

Return to work

(median)

Yes

35.5

37.5

–

17

3

8

No

29.5

30.9

–

55

2

4

U

49

69.5

–

13.5

68.5

30

p

0.004*

0.023*

–

0.001*

0.015*

0.001*

Associated tendon repair

(median)

Yes

–

–

–

43

–

5

No

–

–

–

22

–

8

U

–

–

–

60.5

–

73

p

–

–

–

0.042*

–

0.027*

Wound adhesions

(median)

Yes

23

–

–

55

2

3.5

No

44.4

–

–

22

3

8

U

87

–

–

33.5

80

44

p

0.016*

–

–

0.001*

0.003*

0.001*

Residual joint stiffness

(median)

Yes

22.6

17

–

70

–

4

No

37.5

42

–

26

–

7

U

48

45.5

–

26

–

41

P

0.044*

0.040*

–

0.018*

–

0.033*

Scar tissue by ultrasound

(median)

Yes

21

17.3

–

58

–

3

No

44

44

–

24

–

8

U

65.5

91.5

–

74

–

87.5

P

0.002*

0.019*

–

0.006*

–

0.005*