Raynor had to miss the World Cup in 2008 because of the injury
Former Great Britain winger Gareth Raynor has left Hull despite having a year left on his contract.
The 31-year-old played 14 times last season after recovering from a foot injury that required surgery.
Raynor joined Hull in 2001, although he spent a season with Leicester in 2002 after switching codes.
"I have thoroughly enjoyed my career at Hull FC and leave the club with many memories, in particular the support shown to me by the fans," Raynor said.
Saying Raynor had left by mutual consent, chief executive James Rule added: "On behalf of the directors, backroom staff, coaches and supporters of Hull FC, I would like to thank Gareth for his contribution and wish him the best of luck in his future career."
Raynor joined Hull after a brief spell with Leeds Rhinos, having started his career with rugby union side Leeds Tykes.
He returned to union, joining Leicester in 2002, but only made two starts, prompting a third, more successful switch of codes.
After establishing himself in the Hull side, Raynor also gained international recognition, winning six caps for Great Britain and scoring the winning try in the 2006 Tri-Nations victory against Australia in Sydney.
However, the last season was disrupted by injury, while Raynor also has a court appearance set for April where, along with partner Catriona Thompson, he will face charges of counterfeiting and fraud relating to the alleged trading of ink cartridges and copying of computer games.