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Table 1 Results of the static muscle power tests.

From: Mind your hand during the energy crunch: Functional Outcome of Circular Saw Hand Injuries

  

Grip Strength (kg)

Tip Pinch (kg)

Key Pinch (kg)

Three-Point Pinch (kg)

Injury Severity (number)

 

Injured Hand

Uninjured Hand

Injured Hand

Uninjured Hand

Injured Hand

Uninjured Hand

Injured Hand

Uninjured Hand

Grade 1 (n = 7)

Mean

44.33

43.20

9.01

9.26

11.06

11.07

11.07

10.37

 

SD

9.87

8.53

2.66

2.37

2.15

2.08

3.04

2.19

 

Mean Difference

(injured-uninjured)

+1.13

-0.24

-0.01

+0.70

 

p

0.435

0.553

0.957

0.216

Grade 2 (n = 40)

Mean

41.71

48.35

7.74

9.34

9.62

10.91

8.5

9.39

 

SD

13.06

11.04

3.59

2.85

3.18

2.72

2.54

2.29

 

Mean Difference

(injured-uninjured)

-6.64

-1.60

-1.29

-0.89

 

p

< 0.001

< 0.001

< 0.001

0.004

Grade 3 (n = 67)

Mean

35.38

45.13

7.16

9.54

9.00

11.27

7.56

9.97

 

SD

12.87

9.34

3.84

3.61

3.98

3.07

3.52

3.61

 

Mean Difference

(injured-uninjured)

-9.76

-2.39

-2.27

-2.41

 

p

< 0.001

< 0.001

< 0.001

< 0.001

Total (n = 114)

Mean

38.29

46.02

7.50

9.43

9.33

11.05

8.12

9.74

 

SD

13.09

10.09

3.70

3.25

3.63

2.90

3.27

3.09

 

Mean Difference

(injured-uninjured)

-7.73

-1.94

-1.74

-1.66

 

p

< 0.001

< 0.001

< 0.001

< 0.001

  1. Grade 1: Laceration without affection of neurovascular, osseous, or tendonous structures; Grade 2: Laceration with affection of neurovascular, osseous, or tendonous structures, Grade 3: subtotal amputation, avulsion, amputation; SD: Standard Deviation; p: Statistical Significance, Performance was compared using the two-tailed Student's t test