Expert at Pa. trial: Russian boy didn't hurt self

By the Associated Press | September 7, 2011 | 5:40 PM EDT

YORK, Pa. (AP) — A forensic pathologist testifying in the trial of a Pennsylvania couple charged with killing their 7-year-old adopted son from Russia says the boy didn't cause the injuries that killed him, as his parents have claimed.

The York Dispatch reports ( that Dr. Wayne Ross told the jury Wednesday that "severe, significant failure-to-thrive or starvation" contributed to Nathaniel Craver's 2009 death.

The trial of Nathaniel's parents, Michael and Nanette Craver, began Tuesday. They adopted Nathaniel and his twin sister from a Russian orphanage in 2003.

Testifying for the prosecution, Ross says the boy's legs were as thin as pencils, bruises covered his torso and back and his brain showed evidence of trauma.

The Cravers' lawyers say the child's injuries were self-inflicted, but Ross says he ruled that out during the autopsy.