The NFL Players Association has decided not to demand a formal investigation of the Redskins’ handling of quarterback Robert Griffin III’s knee injury, the union announced Friday.

The union conducted what it called an informal inquiry this week and decided not to exercise its right under the sport’s collective bargaining agreement to initiate a formal investigation. The decision relieves the Redskins’ of what could have been a thorough inquiry into the handling of Griffin’s injury, at least from a medical perspective. Union officials have said that coaching decisions are not under NFLPA jurisdiction.

“The quality of medical care [Griffin] ultimately received is only one part of this,” the union’s medical director, Thom Mayer, said in a written statement on a Web site affiliated with the union.

DeMaurice Smith, the union’s executive director, said in a written statement on the same Web site that “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. Our thoughts are with Robert as he recovers from his surgery and we hope he returns to full strength.”

Griffin underwent surgery Wednesday in Florida to repair tears of the lateral collateral and anterior cruciate ligaments in his right knee. He left the Redskins’ playoff loss to the Seattle Seahawks Sunday after re-injuring his knee late in the game. He was playing in his third game since suffering a mild sprain of the LCL in that knee, and Redskins Coach Mike Shanahan has received widespread criticism for allowing a visibly hobbled Griffin to remain in Sunday’s contest.

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