Cardiff have confirmed that Craig Conway has suffered ankle ligament damage and will be forced to sit out the remainder of the season.
The Scottish winger lasted just half-an-hour of the Bluebirds' 1-1 draw with Watford on Monday before being forced from the field.
A hefty challenge from Jonathan Hogg brought his afternoon to an abrupt halt, and has ultimately brought the curtain down on his 2011/12 campaign.
Cardiff boss Malky Mackay was angered by the challenge on the day and feared that he would find himself shorn of the services of a key performer.
He said: "I thought it was a horrendous challenge and I didn't understand the decision of the referee.
"Craig was coming into the game and having a go at their left-back.
"He'll now go for an X-ray and we hope his ankle is not broken. It was not a good challenge and we'll lose another player from that."
Medical tests have revealed that Conway has suffered no broken bones, but the outlook is still bleak.
"Craig has suffered torn ankle ligaments and as such is expected to be out for three months," read a statement released on the club's official website.
Conway will play no further part in Cardiff's promotion quest, with Monday's point against Watford keeping them inside the Championship play-off places.