Gethin Jenkins will miss the third Test after fracturing his right cheek bone on Saturday.
Welsh props Gethin Jenkins and Adam Jones have both been ruled out of Saturday's third and final Test against South Africa.
Blues prop Jenkins underwent surgery in Pretoria after fracturing his right cheek bone in a clash of heads with Bryan Habana at the start of the second half at Loftus Versfeld on Saturday. He will be out of action for up to eight weeks.
Ospreys prop Jones had to have his shoulder put back in place after a charge from Springboks second row Bakkies Botha. The Springbok was cited after the game for the challenge and has been suspended for two weeks so will miss the final test as well.
Botha's charge led to Jones dislocating his right shoulder which was put back in place under anesthetic. He will see a specialist on his return to find the full extent of the damage.
Centres Jamie Roberts and Brian O'Driscoll also went to hospital, along with Tommy Bowe. Roberts damaged his right wrist, although X-Rays showed there is no fracture.
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.