[Medical research on the craniotomy specimens 5000 years ago]

The skull of the master of M392 tomb 5000 years ago unearthed in Guangrao County, Shandong province from 1995 to 1996 had a round and smooth-edged bone defect at its left parietal part. By using the methods of morphological observation and medical imaging, a contrastive research was made between the characteristics of unearthed skull specimens and that of the healing edge of fenestrate bone of the skull after craniotomy and that caused by all sorts of diseases. It is thus proved that the skull defect of M392 tomb master was caused by craniotomy.