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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