Four-year-old Killian is seen in a photo posted to a GoFundMe page.

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A 4-year-old Idaho boy is expected to make a full recovery after he was internally decapitated in a car crash, thanks in part to a good Samaritan who came to his aid, according to a report.

Brandy Gonzalez was driving back from Nevada on a stormy day after celebrating her son Killian’s fourth birthday when the car crash occurred, television station KBOI in Boise, Idaho, reported Friday.

A Nampa Police Department officer and his wife, Leah Woodward, were also traveling in the area, witnessed the crash and ran to the vehicle to help.

“We could hear a kid screaming, a little baby screaming. And my husband took a hitch… And he smashed out the back window of Brandy’s vehicle,” Woodward told the station.

In a move that likely saved the little boy’s life, Woodward held Killian’s head for more than 30 minutes straight.

“If they would have moved him a bunch, or tried to take him out, it could have been much worse,” Gonzalez said in an interview with the station.

Killian was “clinically decapitated” in the crash, a rare condition where the skull separates from the spine, KBOI reported. Less than 1 percent of those internally decapitated survive.

He also suffered a ruptured spleen, a broken arm and multiple broken ribs.

But despite his severe injuries, the youngster — who didn’t even have surgery — is expected to make a full recovery.

“He’s doing amazing. He’s shocked everyone there. They keep telling me he’s the talk of the hospital,” said Gonzalez, who was also injured in the crash.

She thanked Woodward for saving her little boy’s life.

“She saved my baby. She gave him back,” Gonzalez said.

A GoFundMe page has been set up to help pay for the mom and son’s medical treatment.

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