The operation aims to remedy a "core instability in the shoulder" and will take place over the next three weeks. Ryan's rehabilitation is likely to take at least six months, ruling him out of the Ospreys remaining four Heineken Cup Pool 3 games, as well as their defense of the Celtic League and Welsh international action.
Commenting on Ryan's injury Ospreys Rugby Manager Derwyn Jones said, "This is devastating news for Ryan, the Ospreys and Wales. Ryan made a massive impact last season, with his progress culminating on the Lions tour where many observers commented that he was the stand-out player of the tour.
It is vital that this procedure is undertaken in order to protect his long term career. We have taken the best possible medical guidance and they have advised that Ryan is best served by undergoing this surgery"
With just a week to go before Wales kick off their Rugby Women's World Cup campaign against hosts France in Paris, head coach Rhys Edwards and flanker Sioned Harries are looking ahead to the tournament with optimism.
After two years in the international wilderness, Adi Taviner is hoping to make up for lost time when she takes part in her second Women's Rugby World Cup which kicks off in Paris next Friday where Wales take on hosts, France.
The WRU's Women and Girls legacy events - #TRY OUR GAME have proved popular this week with current players and newcomers to the game learning new skills and picking up tips from national squad players.
We caught up with Shona and Ellie from the Wales women team ahead of the start of the Women's Rugby World Cup in Paris next month at a recent women's training session to encourage and promote more women and girls to try their hand at rugby. #tryourgame
The Women's Rugby World Cup warm-up clash between Wales and USA proved bittersweet for centre Elen Evans. Despite being one of the star performers on the day on her 50th Test appearance, USA edged home 10-7 at Cross Keys.
Wales completed their Junior World Championship campaign with a victory over Samoa. Team manager Mark Taylor and No 8 James Benjamin reflect on a tournament which saw Wales win three games and lose two.