It was feared that the 32-year-old had picked up a serious knock during a pre-season game against Groningen and was facing up to a lengthy spell on the treatment table.
It has, however, been revealed that the damage suffered is not as bad as first feared.
That news has come as a welcome relief to Martin O'Neill, with the Black Cats boss confirming that Brown will not require surgery.
"We've had really decent news on Wes," he told the Sunderland Echo.
"They've done two sets of scans and tests and X-rays on Wes and there doesn't seem to be anything broken, which was a real worry for us at the time.
"And I know that he's feeling better both physically and psychologically and we now know that he will be out for a lot less time than we first feared when it happened."
O'Neill added: "The word was drifting around the dressing room when it happened that it could be a broken bone, but we weren't really sure.
"It would have been terrible news, for us and him, if it had been the case because he can be such an important player when he's fully fit and in form.
"But now that the results show no serious damage, he can start focusing on gently recuperating and looking to step back into things in the weeks ahead."
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Chelsea won the Europa League on Wednesday. The Blues defeated Benfica 2-1 on injury time goal from Ivanovic.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.