By Matt Hladik If the Philadelphia 76ers are going to make a run at an NBA title this postseason, they need Joel Embiid healthy and playing at an MVP-level. Understandably, Philly fans held their collective breath for a brief moment during the first quarter of this afternoon’s game at Madison Square Garden against the Knicks. Embiid, who is one of the top candidates for league MVP this season, was driving to his left along the baseline when he stepped on Evan Fournier’s foot, rolling his left ankle. As Embiid fell, his right knee buckled awkwardly underneath him. After the play, Embiid grabbed…