ESPN's Marc Stein previously reported that Durant was likely to play on Wednesday.
He practiced at full speed on Monday and Tuesday, Stein reported.
In Durant's absence, Oklahoma City has posted a 3-3 record. The 6-foot-9 forward also missed the first 17 games of this season due to a Jones fracture.
Over nine games this season, Durant has averaged 22.4 points, 5.0 rebounds and 3.6 assists while posting a 28.2 Player Efficiency Rating.
The Thunder are 2.5 games back of the Suns for eighth place in the Western Conference standings.
- Chris Johnson and Paul Palladino