Shoulder pain.

Twenty years ago, I injured my shoulder while snowboarding.

There are three ligaments descending along the arm, and one of them has torn...

I was told to do rehabilitation, but at that time I was busy with work at the company and just endured it, so I didn't receive any treatment.

I just left.

Right now, I can't even lift my arm to scratch my back, so I use a back scratcher, and I also tried acupuncture at the Korean medicine clinic.

I try physical therapy as well, but it only works for a short time, so there's no lasting effect.

Sometimes, my shoulder really hurts as if someone is cutting it with a razor blade, but there isn't any specific prescription for it.

If anyone has experienced similar symptoms and experienced relief, I would like to hear your opinion.