Disabilities caused by musculoskeletal and connective tissue disorders?

how common are these disabilities and on average how long does it take to recover?
Answer:
I have rhumetiod arthitis and the only thing i can do is take medication to stop the progression and exercise to remain limber.

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Sadly, these are becoming very common, and generally there is no cure from diseases that may cause these Most are from Autoimmune diseases.

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