Denver Nuggets forward Kenyon Martin needs arthroscopic surgery on his injured right knee and will be sidelined indefinitely.
Martin, 28, was scratched from Wednesday's 109-107 loss to the New York Knicks after an MRI revealed loose cartilage that has to be surgically removed.
"I won't be out the entire season," Martin told reporters late Wednesday.
"But I have no idea, at this point."
"Right now, I'm at a loss for words, you know what I'm saying? I worked my butt off in training camp.
"For this to happen now, I'm down in the dumps. But I've dealt with worse, so I've just got to fight through it."
Martin has started two games this season, scoring 19 points and pulling down 20 rebounds in 63 minutes, but cannot recall how he injured the knee.
"That's the most frustrating thing," Martin said. "I have no clue, none whatsoever.
"How I did it or what day I did it. I need something, a rabbit's foot, something."
Martin was drafted first overall by the New Jersey Nets in 2000, and traded to Denver for three first-round picks on July 15, 2004.
The Cincinnati product has averaged 14.8 points, 7.3 rebounds, 2.2 assists, 1.2 steals and 32.9 minutes in 411 NBA games (398 starts) for the Nets and Nuggets.