The Philadelphia 76ers announced that center Joel Embiid has undergone arthroscopic surgery on his left knee and will be re-evaluated in six weeks.

Joel Embiid sparked injury concerns again on Christmas ... He returned to the court a week later wearing a protective face mask, which he was also seen wearing on Christmas Day.

Joel Embiid’s injuries aren’t just causing him to miss games; now, there is internal strife between the team front office and their star player. On ESPN’s “NBA Today” show on Thursday ...