Lots of good information and links to support groups at ⇒ Cats and Rabbits and More.
Cross posts for help for pets in need at ⇒Handipets.
Aids for rabbits with limited mobility:
Carts at ⇒K9Carts.
Custom carts at ⇒Doggon.
Youtube video of ⇒ rabbit using cart.
Hydrotherapy at ⇒ RabbitCare.org.
Videos of two different types of slings: ⇒This one and ⇒this one.
Housing, supports, and care ideas for disabled rabbits at ⇒Mohrskc.org.