Harvesting cranial bone grafts
The cranial vault offers a large stock for harvesting calvarial bone grafts.
Depending on the type and size of the defect to be repaired, various harvesting techniques can be used.
If a cross-forehead incision through the pericranium has been chosen as a route to the orbits and midface, a second incision has to be made posteriorly to gain exposure to parietal donor site area (see illustration).
If the pericranium has been elevated posteriorly already, the dorsal wound edges may be reflected posteriorly for additional exposure of the donor site.
Note of caution:
Even the harvesting of outer table calvarial bone grafts is associated with potential intracranial morbidity. Therefore the graft should be taken from the skull over the non-dominant hemisphere.