Fig. 3From: Treatment of the surgical neck fracture of the humerus with a novel external fixator in the elderly with osteoporosis: biomechanical analysisSpecimens with external fixation (a) and plate fixation (b) for measurement of the resistance to load and torsional stress. Ten strain gage pieces were attached along the two sides of the fracture line, with a vertical distance of 2 mm to the broken siteBack to article page