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4Small fragment fixation

A protruding screw head can cause ligament irritation and eventual joint stiffness.

Pitfall: protruding screw head

A protruding screw head can cause ligament irritation and eventual joint stiffness.
In order to avoid such protrusion, slightly enlarge the entrance to the screw hole in order partially to sink the screw head. Do not attempt to countersink with too large a tool, and be careful not to overtighten the screw, to avoid fragmentation.