Mo Williams underwent surgery remove bone spurs from the joint of the tibia and fibula in his left leg.

Williams included an apparent criticism of the Cleveland Cavaliers' organization in announcing the surgery.

"Nobody and I repeat nobody actually gave a damn about my health but me," Williams wrote as a caption on his Instagram post showing him in a hospital gown with an IV hooked up to his right arm.

Both the Cavaliers' team physician, Dr. Richard Parker, and another doctor consulted for a second opinion concluded that Williams' knee did not require surgery. A third opinion Williams sought on his own led to the procedure. 

Williams is still occupying a roster spot with the Cavaliers despite the fact that Williams' agent informed Cavs general manager David Griffin he planned on retiring.

Williams has yet to file the necessary paperwork to retire in the weeks that have followed. The Cavs have attempted to negotiate a buyout for Williams' $2.2 million contract for the 16-17 season but no agreement has been reached.