Cancellous screws have a thicker inner diameter that is ideal to be used in the cancellous bone. These surgical screws are fully threaded. Fully threaded cancellous screws are ideal to be used in metaphyseal and epiphyseal regions as a placement screw. It has larger threads and a higher pitch in comparison to other screws. They have tips that aren’t tapered. Their shaft is usually long and the diameter offers a great surface area for the particular purchase of the screw threads on the bone.