Fig. 1From: A comparison of bone conductivity on titanium screws inserted into the vertebra using different surface processingX-ray image of specimen. The insertion position of the screw was checked by an X-ray image. Specimens were adapted for examination if the screw was in contact with cancellous bone only (upper image), and excluded as an inappropriate position if any part of the screw was in contact with cortical bone (the arrow in the lower image)Back to article page