Radwanska's participation in Miami is in doubt after she limped to a 6-2 6-1 loss to Italy's Flavia Pennetta on Sunday in the final of the BNP Paribas Open at Indian Wells.
"Now I am having just a few days off, lucky I am playing Friday so hopefully then I will be good," said Radwanska, who will play either Serbian Bojana Jovanovski or Switzerland's Romina Oprandi.
"Lots of treatment, pills and other stuff that can help I will do. I will try, I still have a few days I am hopeful I can do it."
A winner in Miami in 2012, Radwanska had been in superb form this season, reaching the semi-finals of the Australian Open and Doha followed by her finals appearance in Indian Wells.
Radwanska went into the match against Pennetta as a slight favourite but was unable to play near her best because of a knee injury that severely restricted her movement.
She called for a medical timeout early in the second set and struggled to control her emotions at the ceremony.
"The final in a mandatory tournament is a good result," offered a reflective Radwanska about her loss. "I had never been to the finals there before. It is never good to lose a final but a final is a final.
"The pain is always going to be in your head when you know there is something wrong but I still have a couple days before my first match so hopefully it will be much better."
- Sports & Recreation
- Flavia Pennetta