Bones found at a former hospital in Worcestershire, England show evidence of early amputations and other medical research.
Simon Sworn, archaeologist and project officer, said many of the 19th Century bones had been deliberately cut and were “evidence of amputations in their infancy”.
The British Medical Research Association (BMA) was founded in the hospital in 1832 and Mr Sworn believes the bones from dead prisoners were among those used for research after this became legal practice.
Mr Sworn said the bones were a rare find.
“It’s a very fascinating and important find and appears to show a great deal about early medical practice,” he said.