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Table 1 Summary of Data From the Cantilever Test (Mean ± SD)

From: Biomechanical comparison between solid and cannulated intramedullary devices for midshaft clavicle fixation

 

Treatment

ANOVA

Post hoc ANOVA p value

PLATE (n = 6)

PIN (n = 6)

SCREW (n = 6)

p value

PLATE vs PIN

PLATE vs SCREW

PIN vs SCREW

Stiffness(N/mm)

5.6 ± 0.9

3.1 ± 0.6

1.7 ± 0.4

< 0.0001

< 0.0001a

< 0.0001b

0.007c

Yield load(N)

83.3 ± 8.9

73.2 ± 10.5

43.4 ± 15.1

< 0.0001

0.332

< 0.0001b

0.001c

Maximum load(N)

134.6 ± 12.4

115.8 ± 16.8

77.8 ± 21.6

< 0.0001

0.181

< 0.0001b

0.005c

    

t-test

   

p value

Intramedullary Purchase Length (cm)

n/a

11.9 ± 0.5

8.0 ± 0.5

< 0.0001c

   
  1. a Significant difference between plate and pin group; b Significant difference between plate and screw group; c Significant difference between pin and screw group
  2. PLATE, reconstruction plate; PIN, Knowles pin; SCREW, cannulated screw