Myself and my husband are both on permanent disability. Can we still take the deductions like mortgage interest, medical etc. ?"

[JohnW15 · Accepted solution]

Yes, there's no reason you can't claim these deductions.

[dgstwrt08]

In 2015 we paid almost $ 34,000 to our mortgage company to save our home. We both had very serious health problems and almost lost everything we had. Even had to file bankruptcy. We are doing much better now, thank God. Can we still use all of the intrest from that large amount, and is it possible to get a refund.

[JohnW15]

Are you referring to the interest paid in 2015?  If so, then you’d need to claim the mortgage interest paid in 2015 on a tax year 2015 return.
If you’ve already filed a 2015 return, you’d need to amend that return.    If you haven’t, you’d still be able to claim a refund by filing now (assuming you don’t owe tax, but the IRS would’ve presumably contacted you already if that were the case).
However, I should add a caution, here.  
You claim mortgage interest by itemizing your deductions on Schedule A.  If your total itemized deductions – which could include medical expenses, which might be relevant – are smaller than your standard deduction, you won’t see any tax benefit – that is, you can’t get a refund by amending.  The standard deduction for a married couple in 2015 was $12,600; if one taxpayer was 65 or older, it was $13,850; and if both taxpayers were 65 or older, it was $15,100.  So if all of your combined itemized deductions were smaller than the relevant amount, there’s no point in amending.
Finally, if you have bankruptcy issues now, or you did in 2015 and hope to amend or file that return, you should consult a tax professional.

[SweetieJean]

Do you have any income other than  SSDI?

[xmasbaby0]

Unless you have had tax withheld from your disability income, there is nothing from which to provide a refund, even if you enter deductions like mortgage interest, etc. on a tax return.  If you have had other income with tax withheld, then you might benefit from entering your deductions.