Can RA cause rotator cuff damage?

This year i had open rotator cuff repairs to both shoulders,I was informed by Rheumatologist and Orthopedic surgeons that the tear was caused by the weakening of the tissue by R.A.I am now awaiting spinal fusion of l-3 l-4 l-5 of lumbar sacral region i have sponylosistheis of the lumbo-sacral region grade 4.I also have spondylosis of the cervical spine.Not to mention the usual extremities affected by this wonderful immune disease.I have already had a knee replacement.if it keeps going i will be a bionic Man.I take my R.A meds religiously.I will admit my diet sucks sometimes,i don't get the exercise i wish i could. I was in the Navy EOD Master tech.I was in shape.I was a correctional officer and on Correctional Emergency Response Team(CERT) I was a member of D.O.C. Special Ops Teams. I was in shape then I hit 50. R. A. and Glaucoma what a birthday gift. Well It will get better Just have to suck it up and keep moving. I must say the limitations that have happened due to this condition is the largest challenge i have ever attempted. The reason I put all this here is to let you know this disease attacks those who were in top physical condition as well as those of lesser degree,It is real it does hurt .But we will win we do matter and even if we don't look sick we ARE! Don' Judge us just be patient.