I have noticed recently that when I start curling weight that feels heavy a lot of tension is put on the tendon in my bicep. It also produdes quite a bit when I do it. It also sometimes "twinges" or twitches sort of when i contract the weight up. I have tried to lift with low weight to try get a better mind to muscle connection but it doesnt seem to have helped.
It is mainly in my left arm which 3 years ago I also broke both of the bones in my forearm, the ulna and radius. I have a scar on both sides where they had to do surgery. Im not sure if they cut any of the forearm muscles but I am thinking that this traumatic event may be the cause.
Is it possible that the tendon is trying to take the workload instead of the bicep? Or what do you think the problem could be?
This is the tendon im talking about

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