A hamstring strain previously limited the 31-year-old toward the end of the regular season, forcing him to miss all but three of the team's final 24 games.
The 2017-18 MVP was on the floor to open the playoffs and appeared in all five of the Nets' first-round games against the Boston Celtics. However, he exited Game 1 of the Eastern Conference semifinals against the Milwaukee Bucks after just 43 seconds.
He then returned for Brooklyn's Game 5 win, albeit in a much more limited fashion.
The Nets looked like the team to beat in the East after they steamrolled the Celtics, but the injuries to Harden and Kyrie Irving illustrated the dangers of overwhelmingly orienting a roster around a small number of stars.
Harden gave it his all, though, playing 53 minutes in Brooklyn's Game 7 overtime loss on Saturday night. He finished with 22 points, nine rebounds, nine assists and four turnovers as Milwaukee advanced to the Eastern Conference Finals.