Wales international Martyn Williams has suffered a setback in his recovery from a broken arm after receiving a knock in training.
The Cardiff flanker was expected to be out for six weekswhen he broke his arm during the Blues’ match with Ulster in September. He was hoping to make his comeback in Friday's Heineken Cup clash with Edinburgh but will now undergo further scans before Cardiff confirm a new comeback date for the 99-times capped Welshman.
"He was in the squad for Friday's game with Edinburgh but he had a bit of a knock," said boss Justin Burnell. "He was the first to come in on Monday morning to tell me he was available and could be announced in the initial squad.
"He was taken from the field with our physios and we're just waiting on the results for the X-rays on his arm. So that was a bit of a setback because he has been fantastic for the period when he was injured. We're hoping it is not too serious."
Williams had hoped to win his 100th Test cap at the World Cup before an earlier injury dashed his hopes. At the time, former Wales number eight Emyr Lewis commented that it might have been 36-year-old Williams’ last chance.
"It appears to me, unfortunately for Martyn it's going to be 99 and out," he said.
Meanwhile, Wales captain Sam Warburton is expected to return from international duty to play at number seven against Edinburgh in the Heineken Cup on Friday.