Figure 5

Cranium F, details of the sequence of events for craniotomy. (a) Step 1, cutting of the scalp with close-up showing the thin scalpel marks, superior view, and modified example illustration after Vésale (1543). (b) Step 2, Primary circular cut (yellow dotted line) made with a saw and starting in the frontal region with close-up showing the striated cutmarks, lateral right view. (c) Step 3, unusual step of secondary sagittal cut (orange dotted line) with manual pull-out of the left antero-lateral part of the cranium (area 3) and details of the medial edge of the detached fragment and the cutmarks left by the curved blade (area 4) © C. Partiot.