Fig. 4From: Is the construct stability of the acetabular cup affected by the acetabular screw configuration in bone defect models?Axial torsional strength test using Instron testing machine. The acetabular cup was fixed, and the rotational force was applied using the mechanical testing machine (MTS 858, MTS system Corp., MN, USA) to record the results into torque–angle curves and establish the axial torsional strength (a, b)Back to article page