Recovering from MBD possible!
Our little female has a severe case of MBD as well, but since she's so young (2-4 months), the vet called it something different... Nutritional Secondary Hyperparathyroidism. Basically, MBD is just like osteoporosis or osteoarthritis, but NSHP is more from a lack of nutrition from the get-go.
Unfortunately, we fell in love with our little Emily at a chain petstore (I know - a big no-no!) but we knew that she needed to be rescued. She had what some call rubber limbs that didn't seem to cooperate with her, her grip was very light, her tail just whipped around instead of gripping or curling, and we've never seen her lash her tongue out to catch food.
Three weeks after the initial vet visit, twice a day carnivore care hand feeding, daily calcium gluconate, and, of all things, Pedialyte, and she's got a grip that could crush walnuts! She's also gotten some control over 3 of her limbs, she climbs large, low-lying branches, and she eats grubs that we still hand-feed her. Oh, and she finally pooped (ALOT) for the first time in 3 weeks...
Unfortunately, the vet says that we may just have to hand feed her for the rest of her life (which has been cut short due to her condition). She does rip the superworms, mealworms (gut-loaded and dusted) and crickets right off the tweezers, but won't go for them in her cage.