Brian,
I use those (Inzer sleeves) for heavy pressing, they are very good, just be sure to size them properly.
I have the tendonitis in right elbow.
Left elbow took many years to heal (bone chips) from falling on icy driveway, landing on point of my elbow. (These things helped me to get thru it).
Im using BPC-157 and TB-500 now for my knee (arthritis) and elbow (tendonitis). But yes, good sleeves can help w/ both knee and elbow pain/support issues.