Thinking injury may be root cause of ED issues

So about a decade ago I had a terrible crush injury. Crushed my lower body from belly button down. Think Trash Compactor. Shattered bones in both legs. Crushed groin area. Almost had right leg amputated at the hip. Luckily kept both legs and relearned how to stand and walk

Anyways quickly after recovering (4 months later) I noticed my arc problems. I still wake up with an erection almost daily. I have 0 problems if watching porn. But when actually doing the deed with my wife I found I needed pills. I was in my head. Will it work? Why kills? Must be old. Etc

But I recently started thinking it may be from my injury. I developed a nerve disease. RSD/CRPS in my sympathetic and parasympathetic nervous system. Both are responsible for getting g/maintaining erections & ejaculation

Yet my Dr hasn’t brought this possibility up. What do you all think? Is it physical or more psychological. What has worked for you guys? Anyone similar?