Sandro sustained the injury during Tottenham's 0-0 draw with QPR in January and has not played since.
The 24-year-old Brazilian has said that he is happy with the progress he is making off the pitch, as well as the way the team are performing in the league.
"I've started to run again, I've been out for three months, I'm improving," he told Globo Esporte.
"I don't want to skip stages to return quicker. I have to do what the doctors tell me. If I try too hard, the knee will swell again.
"The team are in a great moment, we have to keep doing this way. We have to fight to finish third or fourth in the league."
Sandro has 17 caps for Brazil.