Ospreys back row Ryan Jones will miss the start of the new season after undergoing keyhole surgery.
The back-rower went under the knife after re-aggravating a historic knee injury in training.
Ospreys Head Physio, Chris Towers, confirmed: "After undergoing investigation and bearing in mind where we are in the season it was agreed that the best course of management was for Ryan to have some minor keyhole surgery.
"The early prediction sees him back available around the six week mark."
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.