Two pins should be inserted in each of the proximal and distal fragments in the safe zones.
The risk of tendon penetration or injuries to nerves, vessels, and muscles is determined by the anatomy of each region. Pins should not be placed where they will enter a joint cavity. This is described in the relevant section.
When possible the use of the image intensifier is recommended to facilitate optimal and safe pin placement.
In temporary external fixation, the pins should be placed so that they do not interfere with planned later definitive fixation.