I have had pain in my brachioradialis muscle for months and my bicep is getting weaker. the tendons just below the bicep towards the elbow joint are sore when doing a bicep curl. could something be torn? i dont recall a sudden injury occurring.

Get an exam and a Dx: Pain in the brachioradialis is quite unusual. It could be a tennis elbow or a biceps tendinitis? If there wasn't a sudden injury there may have been an overuse activity/exercise. In any case, you need to see an orthopedic/sports medicine doctor to establish a correct diagnosis (Dx). Then treatment can start. There is no quick fix. Typically PT and/or a steroid injection may help.