Fig. 3: Biomechanical testing setup.

A A synthetic bone model, fixed with one of the developed implants, was mounted to the material testing machine. A single-leg stance test with uniaxial load was used. B Visual markers were placed around the pubic symphysis and iliosacral joints and their motion was tracked using a camera system. The material testing machine measured the displacement of the whole pelvis, whereas optical video analysis was used to measure bone movement at the pubis symphysis. The methods of attachment (C) and optical measurement (D) of cadaver bones were similar to those used for the synthetic bone models. Colored arrows in panels (B and D) indicate movements along the y-axis. The number of cycles used to test cadaver bones was lower than that used for testing the synthetic bone models because of the limited time available after cadaver specimens were defrosted.