Coach Steve Hansen has gone out on a limb to be fully fit for Wales' World Cup campaign next month.
The New Zealander went under the knife on Monday as an old rugby injury flared up during the team's pre-Cup warmup in Lanzarote.
"It's an old knee injury which has been playing up for about six months," team manager Alan Phillips said. "It's a cartilage thing - they just went in there and cleaned it up. He was in and out on the same day."
Phillips said there were no serious injuries among the 30-man squad, although there was "plenty of fatigue and the odd ankle strain".
"They really put the work in over there, fair play to them," the former Wales hooker said.
"There are a lot of tired bodies in the team."
Phillips said it was too early to say if all 30 players would take part in a training match at the Millennium Stadium on Wednesday.
Meet the members of the WRU's inaugural Youth Board - after an online selection process which saw a host of high calibre candidates submit video applications the WRU has made its first 15 appointments.The board is made up of individuals aged between 16 and 21, and will meet for the first time at Principality Stadium on Monday 15th February.
The Wales Women's team headed to Dare Valley Country Park on a team bonding exercise as the entire squad got together for the very first time in preparation for this season's Six Nations championship which kicks off on Saturday with a clash against defending champions Ireland, in Donnybrook.
Wales Head Coach Warren Gatland discusses his team selection for the opening round of the RBS 6 Nations where he leads his side against Ireland, on Sunday. As WRU TV's Luke Brodley discovers, Gatland is fully aware of the challenges the defending champions pose
WRUTV caught up with Wales Women captain Rachel Taylor at the RBS 6 Nations launch and how a good crowd really helps boost the girls performance. Tickets for all three Women's home games at The Gnoll, Neath are available from www.wru.wales/tickets