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Table 2 Construct stiffness data in varus and valgus loading directions for different K-wire configurations or external fixator

From: Biomechanical analysis between Orthofix® external fixator and different K-wire configurations for pediatric supracondylar humerus fractures

Varus loading Magnitudes (Nm/mm) ANOVA (P) Comparison (P)
Mean ± SD (I) (II) (III) (IV) (V)
Two crossed K-wires (I) 20.4 ± 2.4 0.000 0.000 0.000 0.526 0.224
Two lateral K-wires (II) 14.1 ± 2.0 0.194 0.000 0.000
Three lateral K-wires (III) 15.4 ± 2.3 0.000 0.007
Three crossed K-wires (IV) 21.2 ± 3.1 0.104
External fixator (V) 18.9 ± 2.9
Valgus loading Magnitudes (Nm/mm) ANOVA (P) Comparison (P)
Mean ± SD (I) (II) (III) (IV) (V)
Two crossed K-wires (I) 16.7 ± 2.1 0.000 0.000 0.339 0.238 0.126
Two lateral K-wires (II) 13.5 ± 1.7 0.012 0.000 0.033
Three lateral K-wires (III) 15.8 ± 2.0 0.042 0.564
Three crossed K-wires (IV) 17.9 ± 2.3 0.001
External fixator (V) 15.3 ± 1.8
  1. Italicized values are significantly different between two groups (P < 0.05)
  2. The values are given as mean ± standard deviation