In reply to Removed User:
I was susceptible to sore elbows (inside and out ) and was advised to do eccentric wrist curls, resting my forearm on a stool, then lowering a dumbell, palms up, and then lift the dumbell back up. The lifting back up is important. I now do three sets of ten on each arm each day with about 12-14 kg.
I also have a 1.5kg weight on the end of a 0.5m stick which I rotate outside ten times and then inside ten times, each hand, each day. A big hammer would do the job.
I train hard several times each week and now never have bad elbows so these two exercises do it for me. However these things are often complex and a visit to a good physio may be the best option.
The biceps curl will probably be adding to the problem.