Asked about playing Miami, which begins in 10 days, Azarenka replied, "I don't know.
"It's tough to say, because, you know, this problem that I have is something that is not so easy to get rid of."
Azarenka said the injury happened three days before the Australian Open, and left her in a walking boot for three weeks afterwards. That left her with less than a week's practice ahead of Indian Wells, she added, and the foot continued to occasionally be painful.
It flared up again early in her match with Davis. "It was just one of the wide shots. My foot twisted a little bit," she said.
Azarenka described the injury as "inflammation that is nerve damage" and admitted that she resumed competition "maybe a little bit too early."