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Table 2 Tightness and stripping rates before and with screwdriver augmentation for surgeons and researchers with the 1st, 5th and 10th highest stripping rates

From: Screw tightness and stripping rates vary between biomechanical researchers and practicing orthopaedic surgeons

 

Number of attempted insertions

Number of unstripped insertions

Stripping rate (%)

Statistical difference in stripping rate

Unstripped screw tightness (%) (95% CI)

Statistical difference in tightness

Surgeons

 Pre-augmentation

90

49

46

p = 0.162

77 (73–81)

p = 0.036

 Augmentation

90

56

38

 

83 (79–86)

 

Researchers

 Pre-augmentation

90

70

22

p = 0.001

76 (71–81)

p = 0.472

 Augmentation

90

86

4

 

74 (71–77)