Brammer's suffered the groin injury for over two months and his 45 minute return ended in a reoccurance of the injury, last month in the 3-0 win over Derby.
Brammer's suffered serveral set backs along the way and now Dario has spoken to specialist Dai Reeves, Brammer will go under the knife and have an operation in an attempt to get him back to full fitness - after nearly 2 years with the niggling injury.
"There is no guaratee that it will solve the problem because you can't always be sure. There is no date set because we have to find the right surgeon first but want to give Bram every chance to return sooner rather than later" Dario told the official site.