I'm located in a Reserve Center, and I can tell you that, in accordance with latest guidance from SECDEF, they're tossing long-term medically restricted members out with pitch forks now. Effective a couple months back, if you have a medical condition that makes you inelligible to deploy to a combat zone that lasts more than 12 months, you MUST be administratively separated. So, staying in the Army might not be a long term solution for the OP.