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Table 5 Static tests summary

From: Mechanical strength of a new plate compared to six previously tested opening wedge high tibial osteotomy implants

SpecimenCrack / Ultimate load [kN]Medial displ. at crack/ ultimate load [mm]Lateral displ. at crack/ ultimate load [mm]valgus-malrotation of the tibial head at crack/ ultimate load (°)Lateral stiffness at crack/ ultimate load [kN/mm]Failure types
TomoFix std. 14.1 / 5.40.6 / 1.23.1 / 5.01.8 / 2.91.3 /1.11 and 2
TomoFix std. 25.1 / 5.21.0 / 1.14.2 / 4.42.5 / 2.61.2 / 1.21 and 2
Mean:4.6 / 5.30.8 / 1.23.7 / 4.72.1 / 2.81.3 / 1.1 
SD ±:0.7 / 0.10.3 / 0.10.8 / 0.40.5 / 0.20.1 / 0.1 
PEEKPower 1- / 3.7- / 0.5- / 2.9- / 1.6- / 1.31 and 2
PEEKPower 24.2 / 5.10.1 / 0.12.7 / 3.31.3 / 1.51.6 / 1.51 and 2
Mean:- / 4.4- / 0.3- / 3.1- / 1.6- / 1.4 
SD ±:- / 0.1- / 0.3- / 0.3- / 0.1- / 0.1 
iBalance 1- / 5.7- / 0.3- / 1.6- / 0.6- / 3.62
iBalance 2- / 5.4- / 0.3- / 2.1- / 1.1- / 2.62
Mean:- / 5.5- / 0.3- / 1.9- / 0.9- / 3.1 
SD ±:- / 0.2- / 0- / 0.4- / 0.4- / 0.7 
TomoFix sm 13.1 / 3.20.6 / 0.91.3 / 1.80.9 / 1.32.4 / 1.82
TomoFix sm 23.2 / 3.60.4 / 0.61.6 / 2.30.9 / 1.42.0 / 1.62
Mean:3.2 / 3.40.5 / 0.81.5 / 2.10.9 / 1.42.2 / 1.7 
SD ±:0.1 / 0.30.1 / 0.20.2 / 0.40 / 0.10.3 / 0.1 
Contour Lock 12.4 / 3.20.6 / 0.52.5 / 3.91.5 / 2.11.0 / 0.81 and 2
Contour Lock 2- / 3.9- / 0.5- / 4.2- / 2.2- / 0.91 and 2
Mean:- / 3.6- / 0.5/ 4.1- / 2.2- / 0.9 
SD ±:- / 0.5- / 0/ 0.2- / 0.1- / 0.1 
Activmotion 1- / 8.9- / 1.3- / 2.5- / 0.6- / 3.62
Activmotion 23.7 / 7.50.7 / 2.12.6 / 5.10.9 / 1.41.4 / 1.51 and 2
Mean:- / 8.2- / 1.7- / 3.8- / 1.0- / 2.6 
SD ±:- / 0.7- / 0.4- / 1.3- / 0.4- / 1.1 
FlexitSystem 1- / 2.9- / 1.0- / 2.5- / 1.7- / 1.21 and 2
FlexitSystem 2- / 4.5- / 1.2- / 2.7- / 1.9- / 1.71 and 2
Mean:- / 3.7- / 1.1- / 2.6- / 1.8- / 1.4 
SD ±:- / 0.8- / 0.1- / 0.1- / 0.1- / 0.3 
  1. Displacements, valgus-malrotation of the tibia head and their corresponding crack and ultimate loads, including mean values and standard deviations (SD). The values of the first 6 groups were retrieved from our previous studies and reported here for purposes of comparison. The mean values and the standard deviation values are in bold