Through personal observations and a literature study we have made a synthes
is of the most ancient healed trephinations in Europe and in the Mediterran
ean basin. Cases of small dimensions that were carried out with simple tech
niques are found in the Mesolithic populations from North Africa, Ukraine a
nd Portugal. The first Neolithic examples of trephinations are extensive an
d have been realised with more sophisticated techniques. This suggests that
the development of agriculture was accompanied by the command of new proce
dures in the field of surgery. (C) 2001 Academie des sciences / Editions sc
ientifiques et medicales Elsevier SAS.