Detroit Pistons star Blake Griffin underwent surgery on his left knee on Tuesday and is set to undergo extended rehabilitation, out indefinitely and yet to have a timetable for his return, according to Shams Charania of The Athletic.

Griffin visited a knee specialist in Los Angeles to determine the best route for his future after a series of knee ailments have plagued him this season. The 6-foot-10 forward appeared in only 18 games this season, missing 19 due to his knee ailments.

The Oklahoma native has put up career-low numbers this season, averaging 15.5 points, 4.7 rebounds, and 3.3 assists per game in what has been a dismal continuation of his best scoring season, postin 24.5 points per game in 2018-19 en route to an All-Star spot.

Arthroscopies are difficult, as it's operating on tissue that has already been opened up for treatment. Recovery is similarly daunting, as re-injury is often common if the injured body part hasn't had enough time to heal.

The Pistons have struggled to a 13-24 record this season, losing nine of their last 11 games. Griffin's frontcourt teammate Andre Drummond has been in the midst of trade rumors, given the Pistons' struggles to hold onto playoff hope, likely due for another somber season with Griffin out of the picture.

It's unclear if Griffin will return before the end of the season, or if the Pistons will even risk it at this point, given his long history of lower-body injuries. His trade value has taken a significant dip, considering his fragile knees and an aging repertoire that hasn't proved effective when it comes to winning.