Skip to main content

Table 1 Mean stiffness (K) and load values (F) for all specimens of both plate constructs in each loading direction with their respective standard deviations (S.D.) and p values from pairwise statistical comparisons

From: Hybrid blade and locking plate fixation for proximal humerus fractures: a comparative biomechanical analysis

Loading direction/variable Fx plate construct ± S.D. PHILOS plate construct ± S.D. p value
Extension
 K (N/mm) 8.770 ± 0.156 9.533 ± 0.286 < 0.001
 F5 (N) 43.979 ± 0.596 47.749 ± 1.510 < 0.001
Flexion
 K (N/mm) 9.541 ± 0.221 9.997 ± 0.298 < 0.05
 F5 (N) 47.711 ± 0.775 49.981 ± 1.569 < 0.05
Valgus
 K (N/mm) 6.900 ± 0.200 6.091 ± 0.181 < 0.001
 F5 (N) 35.131 ± 0.617 29.746 ± 0.815 < 0.001
Varus
 K (N/mm) 7.590 ± 0.196 6.609 ± 0.256 < 0.001
 F5 (N) 37.792 ± 0.990 32.561 ± 1.075 < 0.001
 F15a (N) 84.470 ± 1.547 75.590 ± 3.049 < 0.001
 F15b (N) 79.304 ± 2.507 71.558 ± 3.303 < 0.01
 F30 (N) 134.391 ± 3.574 115.531 ± 6.336 < 0.001
  1. K and F5 are the stiffness and peak load values during elastic tests, respectively. F15a and F15b are loads at 15 mm before and after eight-minute intermission and F30 is the load at 30 mm