I fell in a training session while doing side skips on the road. My body naturally extended my right arm to break the fall and it took a lot of the impact. At the time, the trainer didn’t suggest going home and I then did a 40 minute weight (body and weights) session. It hurt but I pushed through it (because I’m so tough -- and dumb).
No bones were broken, but five months later remedial, massage revealed a lump running across the brachioradialis muscle.
Symptoms are weakness of the forearm and medium strength pain in some situations, like, lifting my laptop one-handed. The pain travels as a jabbing pain from the lump I mentioned to the thenar muscle and the flexor retinacalum. It’s fine otherwise.
My massage therapist suggested deep tissue massage, perceiving it to be an incorrectly healed fibrous mass, but wanted me to find out more about it just in case it’s a surgical thing.