Port Adelaide are bracing to loss All Australian ruckman Paddy Ryder for possibly a month but are heartened by Robbie Gray's recovery after being knocked out in the loss to Fremantle.

Ryder will soon have scans on his injured hip flexor muscle while Gray could play this weekend despite being knocked unconscious in Port's nine-point defeat on Sunday.

"The positive news is Robbie is fine and had no ill effects so far and hopefully be fine this week," Port assistant coach Brendon Lade told reporters on Monday.