A man whose skull was smashed to bits in a horrific lawnmower accident has had it replaced using an implant created with a 3D printer. Michal Lesiow, 31, from Kutna, Poland, was taken to hospital with grass, mud and bone fragments in his shattered skull after the rotary lawnmower ran over his head as he cut grass outside his house. Â… Dr. Pawel Kolasa, head of neurosurgery at the hospital in Åódź where Mr. Lesiow was taken, said: “The patient had massive trauma to the skull, with a hole showing part of the brain. He was lucky to have survived.”...