Fig. 4From: Catastrophic failure of a titanium locking plate in a proximal humeral fracture: case report and literature reviewOptic microscopy images A, B, and C show a globular waved structure, characteristic of fatigue failure. Smooth areas (yellow arrows) suggest initial points of breakage. Asymmetrical ridges (red arrows) and notch (blue arrow) at A and C reveal metal destruction caused by torsional stress. These photos are taken in our own Biomechanical laboratoryBack to article page