Andre Villas-Boas reveals the Welshman is likely to miss "one to two weeks" of action after being forced off during Spurs' 3-0 win over Fulham at Craven Cottage on Saturday
The Welshman sustained the injury while racing onto a Jan Vertonghen pass and shooting straight at Mark Schwarzer during an otherwise convincing second-half performance from Spurs.
Spurs boss Andre Villas-Boas confirmed that Bale, who was replaced by Gylfi Sigurdsson during the second half at Craven Cottage, will be out of first-team action for "one or two weeks", and added that he was disappointed to see the winger pick up an "unfair" booking for simulation.
"Gareth is a player who is so fast that it’s difficult to judge situations," Villas-Boas told reporters. "He has also had injuries to his ankles before, and sometimes he wants to protect himself a little bit, and sometimes he might put his body in situations where the ref thinks he is diving, and he is suffering from it.
"He is now near to a suspension from two unfair yellow cards in the last two games.
"You gain a reputation as a diver sometimes unfairly, and Gareth has suffered a lot in his career. It's a bit harsh on him."
Michael Dawson also picked up a knock to his hamstring as Tottenham picked up their third consecutive win, but Villas-Boas insists the defender's injury is not as serious as Bale's.
Neither are expected to feature in Spurs' midweek Europa League clash with Panathinaikos, but Bale now faces a race against time to be fit for the visit of Everton to White Hart Lane on December 9.
Villas-Boas was pleased with striker Jermain Defoe, who scored twice in the victory, stating that the striker is having an amazing season so far, and saying that there have been a lot of standout performances from individuals this season.
"Whenever you need strikers, Jermain is there," the manager stated. "Sometimes strikers can look distant from the game, but when the team sets them up, it's important for them to have that clinical touch. He just has it, and he's having an amazing season with us so far.
"We have had a very good week following on from the Lazio draw, and there are so many individuals who deserve credit because they've been excellent. They are setting a new standard this season, and it’s good to see.
"It's a good win for the team, and we've managed to change our fortunes in terms of results, but it doesn't stop here. We have to continue with the same momentum.
"It was one of those games where one goal can unlock it, and fortunately we found it, and were able to go all the way."