Post prednisone stress fractures

In June of 2015 I went into a horrible flare that could only be treated by steriods.
I was on them for 6 months. Within those 6 months I suffered a broken toe and 2 stress fractures in my feet. I have never had a broken bone much less stress fractures prior to steriods use. My GI doctor said he believed there was no way the 6 month steriod use could have caused my bones to be weak enough to just get fractures like that. He thinks it is not related.

Since being off steriods I have suffered yet another stress fracture that landed me in that hideous boot for another 4 weeks. My orthopedic says he is positive it is the prolonged steriod use that caused all this.

Did a bone scan and I'm missing basically 20% of the calcium I should have in my bones. Still, my GI thinks this is not related.

Anyone else having this or had this problem from steriod use? I mean if it's not the steriod use could it just be the UC itself? I've searched side effects of my current meds and none of them cause bone weakness.

I should add this 6 month round of steriods was my 2nd round. My first also lasting 6 months but in 2013. Don't know if that also makes a difference.

Edit: And we have talked about that, but my primary and endocrinologist both agree most calcium vitamins are hard on the stomach creating more problems. And with me finally being near or in remission we don't want to do anything to mess it up

I definitely think the UC can be a contributing factor. This last flare my GI said nothing about my albumin being low. I never really paid attention to that number before. My surgeon at my consult is the one who pointed out I was very malnourished and with my albumin that low he wouldn't operate. So I think when we are in flares we are usually at differing degrees of malabsorption, not absorbing nutrients like we should.

The only calcium I will use is one with MCHC because that is made from actual bone matrix so it has all the components bones need like boron, silica ect in addition to the calcium. I have been doing well on it. There are reviews of people taking it with broken bone issues and their orthopedic doc can't believe how well they heal.

DB - yes my main concern is figuring what is causing it so I can try to fix it or make it better in the least. I never heard of the drug you brought up, but I will research it, thank you.

Cupcake- you're right about the absorption when flaring I just assumed it had to be from the steriods since it happened after I started taking them but I started taking them because I was in a flair so I might have already been calcium deficient from that and just never knew. Thank you

Soyno- yes, I am certainly going to press on the subject with my doctors more since 2 completely disagree with each other. I do take 50,000 iu of vitamin D once a month. And as far as weight bearing exercises I'm not totally against it, I am just nervous I'll break another bone LOL that boot is not fun!