Injured Philadelphia 76ers center Andrew Bynum, who said he had bowled a few times during his right knee rehabilitation, Sunday confirmed an ESPN report that he injured his left knee while bowling.

Bynum, who has not played for the Sixers in the preseason or regular season since coming over from the Los Angeles Lakers, said he most recently rolled a frame Nov. 10.

Bynum, who has a history of knee problems, also said, “In hindsight, I guess you shouldn’t go bowling.”

Bynum talked to news reporters before the team’s game against the Cleveland Cavaliers on Sunday.

He also raised the larger question, which undoubtedly not only weighs heavily on Bynum, but on the Sixers, too: “I’m taking the position that if that happens bowling, what happens dunking?”

It has been a lengthy and frustrating process for Bynum and the Sixers, who acquired the talented big man from the Lakers in an August multi-team trade that sent Dwight Howard from the Orlando Magic to the Lakers and guard-forward Andre Iguodala from the Sixers to the Denver Nuggets.

Bynum went to Germany in September to receive protein-rich procedures on both knees, the same treatment Lakers guard Kobe Bryant has used. Proteins derived from the patient’s blood are applied as a medication, according to Orthokine.com, the web site of the procedure.

The Sixers on Oct. 1 had announced that Bynum had a bruised right knee, and on Oct. 15 the team said Bynum would continue conditioning drills and get cortisone injections in his right knee to lubricate and cushion the joint. On Oct. 31, the Sixers said there was no rush to get him back on the court, “Given the long regular season and playoffs.”

Last Monday, the Sixers announced that Bynum would not be ready for basketball activities until early December and would need another four weeks of conditioning, training and practice before he was ready for significant minutes. Friday, Bynum said he suffered a setback, although he said his timetable remained the same. The ESPN report followed late Saturday.

“The cartilage is in a weakened state,” Bynum said Sunday. “That’s what the doctors tell me. Now, I’m going through … [For more on Sixers' Bynum admits he injured knee while bowling, click here.]