osteoarthritis and tennis elbow

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so I'm 36 and been told my knees have osteoarthritis and I ended up with a tennis elbow injury last july lifting boxes. it still is tender but more so when it's tight and needs a stretch. I went through physio, acupuncture, shockwave therapy and chiro treatments. now I feel like I need to do something else. I am looking for anyone else that is just starting out but dealing with injuries and trying to lose weight and gain muscle as a goal.