Vuckic was hurt at Villa Park on Monday night in the reservesâ€™ 2-1 win over Aston Villa.
Pardew said: â€śIt was an emotional night. Haris knew straight away it was a serious injury. Heâ€™s had so many injuries that I think it was one too far for his own mind.
â€śWe were upset for him and we will wait for news on the scan.
â€śIf our fans want to send him any messages it would great, because he is hurt by what was happened.â€ť