CHARLOTTE, N.C. — Interim general manager Marty Hurney insists the Carolina Panthers handled the medical treatment of quarterback Cam Newton “the right way” during Sunday’s 31-26 playoff loss to the New Orleans Saints.

The NFL and NFL Players Association announced Monday they plan to conduct a joint review to determine if the Panthers followed the correct concussion protocol after Newton took a hard shot from Saints defensive tackle David Onyemata midway through the fourth quarter. If the concussion protocol was not properly followed the team is subject to discipline, including a $150,000 fine.

Newton spent time on the ground after the hit. Then, as he was walking toward the sideline, appeared to stumble to one knee. He briefly pointed toward his right eye.

He sat out one play, but returned on the next offensive series and finished the game.

“He took a hit. But when he walked off and he told the trainers he got poked in the eye, then they did take him into the tent and checked him for a concussion, which he did not have,” Hurney said. “And it was really getting poked in the eye.”

Hurney said Newton intentionally took a knee because he was told to by the team’s training staff so Carolina could get an official timeout, thus allowing backup quarterback Derek Anderson a chance to warm up. Anderson came in for one third-down play and was nearly intercepted.

However, the question could become whether or not Newton should have been taken to the locker room for evaluations.

The league and the players union changed its concussion protocol last month after Houston Texans quarterback Tom Savage returned to the field after having a concussion that left the quarterback’s hands shaking after a hit.

The changes to the protocol include the requirement of a locker room concussion evaluation for all players “demonstrating gross or sustained vertical instability (e.g., stumbling or falling to the ground when trying to stand.)”

Newton did not visit the locker room.

Panthers Coach Ron Rivera said he is very confident that the protocol was followed correctly.

“Based on what the young man (Newton) said to me, that is what I believe happened,” Rivera said.

“And again, from that point on I don’t think anything else needs to be said about it.”

Newton said after the game Sunday that “precautionary concussion protocol things” happened, but “it wasn’t my head. It was my eye. My helmet had come down low enough over my eyelid and it got pressed by the player’s stomach.”