How will my spouse who is now disabled affect our marriage?

It will. Disablility add new issues to any relationship. It will depend on your attitude and their attitude. If you are both in a good, strong and stable marriage, you will find that same bond will continue to see your through. There will be stresses, mis-understandings, demands, and pressures that are new. Talk often, be open, ask questions, seek help continue to care deeply for each other. Vows?