Dragons back-rower Ross Moriarty has had ankle surgery after being injured while training with Wales.
Moriarty, who was selected for the 2017 Lions tour, was released from Wales' Autumn Nations Cup squad after struggling with an ankle problem.
The 26-year-old, who has won 44 caps for Wales, had played no part in the competition.
"All has gone well with the op and the road to recovery begins," Moriarty said in a post on his Instagram account.
Dragons have not given a timescale as to when the former Gloucester player will return to action.