Broad is awaiting the results of an MRI after being hit on his right foot by a Mitchell Johnson yorker during England's lower-order batting collapse early on day three of the third Ashes Test against Australia at the WACA Ground.
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The 27-year-old tried valiantly to bowl in the WACA nets before being taken to hospital for X-rays which returned inconclusive results.
Broad, who attended the press conference after play on crutches and wearing a moon boot, will not bowl again in this Test, but is hopeful of batting again if required and remains optimistic he will be fit to play in the Boxing Day Test in nine days' time.
"At the end of the day, even if there is a small crack there and my symptoms aren't painful, I see no reason why I can't continue to play," Broad said.
"Something showed up on the X-ray, but it was a bit inconclusive so I had to have an MRI and we're just waiting on those results.
"I was desperate to get out there and bowl, so I had to try it out in the nets to see how it went.
"Normally with a bruise if you get a bit of blood through it you get going the pain decreases, but it actually increased quite a bit in the nets.
"I won't be bowling (on Monday), but there's a bit of a break in between this Test and next and I'm desperate to be there."
Broad said he didn't fear being targeted by Australia's bowlers if he did bat in England's second innings.
"It's part and parcel of sport. You can get injured any ball, so it's not something that's really crossed my mind," he said.
England endured possibly their worst day on the Ashes tour on Sunday, losing 6-61 to be all out for 251 in their second innings and then allowing Australia to coast to 3-235 – an overall lead of 369 – at stumps.
It now seems only a matter of time before England forfeits the Ashes to their long-time rivals, but Broad said there was still belief his team could pull of a miracle.
"We've had numerous Tests over the past four years that we've managed to save when we've had no right to save," Broad said.
"There's a lot of belief in that change room that we're certainly due a score and there's a lot of guys with great Test records who haven't delivered this series so far and are desperate to.
"We know if you keep working hard on your game, things change for you and we're hoping it changes in the second innings."