The primary rule for you should be no neutral grip rowing/pulling/curling of any kind....at least for now. Maybe later add a little neutral grip pulling, but no hammer curls. I would avoid pronated versions of all that stuff for a couple weeks, or maybe 3.
For upright rows, only do dumbbell, and keep your wrists loose, and the dumbbells fairly far apart. I would also advise not doing any barbell press since your wrists seem to be sensitive to the stress.
I would also avoid underhand curls with a straight bar. EZ curl and dumbbell can be added back when your brachioradialis is feeling ok again.
Yeah, I'm finding neutral grip with seated rows of any kind painful as well as overhand grip on lat pulldowns and cable upright rows. Overhand grip on the other hand is no issue with SL SB DL's...(I figure because the elbow is not contracting at all?) I think it may have all started with overhand grip curls on an EZ bar and/or excessive chest presses with light weight to promote vascular development (whether that is true or works I dunno - it was an experiment).
I'm pretty sure its the correct muscle as its the one running along the top of my elbow and onto my forearm as I sit here typing in a normal typing position...
I never do underhand curls with a straight bar. Had bad wrist tendonitis several times from weights so I tend to use dumbbells and EZ bars for any curls and upright rows (when I use a bar). This time my wrists are good and have been for a long while.
I think maybe keep my routine simple. Say SB SL DL, lat pullover, leg press, lat raises, DL, straight arm pulldowns, & crunches until it heals? (Not ideal I know, but keeps me lifting while hopefully healing).