Shaun Livingston, a key member of the Los Angeles Clippers, suffered multiple torn ligaments in his left knee and will miss the remainder of the season.
Livingston dislocated his knee cap in a sickening scene during the first quarter of Monday's National Basketball Association victory over the Charlotte Bobcats.
Driving to the basket on a fast break, he collapsed to the floor after taking an awkward step, bringing a shocked silence over the home crowd.
Team doctor Steven Shimoyama popped the knee back into place on the court, and Livingston was removed taken to the hospital on a stretcher.
"It's obviously a big loss for us," Los Angeles coach Mike Dunleavy said.
"He was playing well, but I think our guys saw it and got a little bit of a shockwave and at halftime heard what the results were. It took a toll on us a little bit but our guys came back."
The Clippers received even worse news a day later, as an MRI revealed tears to Livingston's ACL, PCL, MCL and lateral meniscus.
He will be sidelined eight to 12 months.