The NFLPA will not demand a formal investigation of the Washington Redskins' handling of the knee injury suffered by quarterback Robert Griffin III, as is allowed under the sport's collective bargaining agreement.

The NFLPA won't demand a formal investigation into the Redskins' handling of Robert Griffin III, who was hurt in last Sunday's wild-card loss to the Seahawks. Daniel Shirey/USA TODAY Sports

On Tuesday, the NFLPA made an informal inquiry to the Redskins and their medical staff in response to discrepancies in the reports about how the team dealt with Griffin's injury.

"Playing through pain is a harsh reality of our business and our union will always hold the League and the clubs accountable to the best medical care," NFLPA executive director DeMaurice Smith said in a statement. "Our thoughts are with Robert as he recovers from his surgery and we hope he returns to full strength."

Griffin underwent reconstructive surgery Wednesday after re-injuring his right knee in Sunday's NFC wild-card game against the Seattle Seahawks. He was playing in his third game since suffering a mild sprain of the lateral collateral ligament in that knee on Dec. 9 against the Baltimore Ravens.

Griffin stayed in Sunday's game against the Seahawks despite appearing to be injured in the first quarter. Coach Mike Shanahan later said that Griffin urged him to leave him in the game, and the coach agreed.