Broad has experienced a variety of injury problems in the last two years, from minor niggles to more serious setbacks and has been forced to sit out a number of high-profile matches and events.
"Anybody with an injury is a concern to us and we've got to manage workloads as best as we can, that's why we're continually looking at other players," he said, when asked about Broad's fitness record. "We will look at it and make sure he's used in the best possible way for English cricket. He knows that."
A torn stomach muscle saw Broad miss three Tests of the 2010/11 Ashes win Down Under, a side strain then forced him to fly home early from the World Cup and he has been absent from England duty since with shoulder and calf problems.
He is currently recovering from a heel injury but is due to link up with the rest of the one-day squad for the fourth and fifth ODIs in India this month.
Miller insists Broad is still viewed by the selectors as an important player in all three formats but does not rule out a review of that position if problems persist.
The 26-year-old is currently the side's Twenty20 captain, perhaps muddying the waters a little, but Miller is not afraid to contemplate action, should it be necessary.
He said: "At this moment of time we're not thinking about taking him out of a format because he's got that sort of quality but if we reached the stage where his body wasn't responding to all kinds of cricket then we're open to that.
"What we have to do is react to the injury that he has at any one time. He felt, and we felt, that he had to look after his body so he went away and worked really hard at that. Since then there have been a few niggling injuries, but anybody can get them.
"The concern is that there have been two or three niggles that have affected his form and availability."