25/02/2026
The Metal Plate Skull
This is a 2,000-year-old elongated skull held at the SKELETONS: Museum of Osteology. It is famous for a piece of metal—likely silver or gold—that appears to have been surgically implanted into the cranium.
The skull belonged to a warrior who suffered a severe fracture, likely from a mace or a sling stone. Ancient surgeons performed a trepanation, and instead of just leaving a hole, they fitted a metal plate to "patch" the area. The most fascinating part for an archaeologist is the bone remodeling; the bone around the metal plate is tightly fused and smoothed over, which indicates the patient survived for months, if not years, after the operation.
Trepanation in Ancient Peru
Beyond that specific skull, the practice of trepanation (drilling, scraping, or cutting a hole in the skull) was incredibly advanced in Peru, particularly among the Paracas and later the Inca.
By the Inca period, survival rates reached roughly 80%, which is staggering considering the lack of modern antibiotics. Surgeons used tumi (ceremonial knives), obsidian scalpels, and bronze or copper chisels. They likely used coca leaves, chicha (maize beer), and various herbal poultices to manage pain and infection. The primary reason for surgery was to treat traumatic head injuries, such as clearing bone shards or relieving intracranial pressure.
The Elongation Connection
The skull with the metal plate also features artificial cranial deformation. This was often a marker of high social status or tribal identity. In Peru, the Paracas culture achieved this by binding the heads of infants with cloth and boards. The fact that this individual had an elongated skull and survived complex surgery suggests they were a person of significant importance.
While the "metal plate" skull is a spectacular find, some researchers still debate whether the plate was placed during life or as a funerary offering, though the bone growth remains a strong argument for a successful, live surgery.