The Spurs phenom suffered a season-ending injury. A physician explains what deep vein thrombosis is, its causes and treatment, and Wembanyama's likely prognosis.

Victor Wembanyama is one of the faces of the NBA, the star of the San Antonio Spurs and already one of the biggest names in basketball around the world.

At 23-29, the Spurs occupy just the No. 12 seed in a crowded Western Conference. They are a scant 3.5 games behind the No. 10-seeded Golden State Warriors (28-27), but without their best player, they seem doomed now to miss the play-in tournament entirely and head straight for the lottery.