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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