
Ultimate Vertical Load Test

head, sudden fluctuation, fracture
The specimen used in the previous test was firmly fixed on the universal testing machine. The specimen was subjected to the ultimate vertical load at a velocity of 0.6 mm/s until failure of internal fixation. The failure criteria were as follows: fracture of the femoral neck and head, sudden fluctuation of the load–displacement curve, and loss of internal fixation stability. The maximum load values for each group were recorded.