Cardiff Blues front rower Gary Powell has been forced to retire due to a chronic Achilles injury.
The 31-year-suffered the injury against Leinster in March this year.
"I have worked extremely hard to overcome this injury, but in the end I have been advised by my consultant that my Achilles will not stand up to the demands of the rugby, which is hugely disappointing," Powell said.
"I would like to thank the fans, the medical team and everyone at the Blues for their support during this difficult time.
"I have played with some great players and made many lifelong friends throughout my career."
Powell joined the Blues from Gloucester in 2006, having previously played for Cardiff, Richmond and Leeds, and made 80 appearances for the region.