Academic Writing

I need a medical report explaining how 18 years of having bilateral degenerative knees can cause chronic severe lumbar back degenerative disc after years of wear and tear. In 1993 I was diagnosed with degenerative bilateral knees. In 2011 I was told that I was walking on bone on bone. I got the right knee replaced in 2011. I got the left knee done in 2012. I had to have knee manipulations on both knees several months after the replacements. The left knee being the last I was diagnosed with multiple layers of degeneative discs in my back. I've been in chronic severe back pain as well as the severe chronic pain I endure in both knees after the surgeries. I still have swelling and pain in both knees. There's fluid above and below both of my knees. Unfortunately my orthpedic has said he's done all that he can due. My primary care doctor has been treating me with pain pills for the last 3-4 years. I have gained about 60lbs from taking the 7.5 Norco. I haven't worked since 2008. I'm trying to get compensated for the daily chronic severe pain and suffering. I need a medical professional letter that explains the back & knees go hand & hand. Example: Explain the two as a paired organ. One won't work without the other. This medical professional letter has to be on medical terms in medical terminology please. Please help I'm a Desert Shield/Storm Veteran. Please know after this letter is written I will take it to my elder PPO for his review & he will rewrite this professional letter on his office letterhead. Desperately need a medically incline professional to write this letter in medically terminology as soon as possible please. God Bless!