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4Small fragment fixation

Screw length needs to be adequate for the screw just to penetrate the opposite cortex.

Determining screw size

Screw length needs to be adequate for the screw just to penetrate the opposite cortex.
Keep in mind that at the apex of the fragment, the minimal distance between the screw head and the fracture line must be at least equal to the diameter of the screw head. If necessary, a screw of smaller diameter will have to be chosen.