Shoulder Injury -four Years And No Actual Diagnosis.

My right shoulder started popping about four years ago. I went to my primary doctor and he suggested lifting weights. Six months later I already noticed some weakness in my right arm. And six months after that my wrist really started hurting to I went to an orthopedic surgeon, he diagnosed me with something, I was in physical therapy, got a little better but my therapists were really worried about the popping of my shoulder. I asked my surgeon on a follow-up appointment and he said I was always going to have it, there was no problem.

A few months later I could barely write with my right arm because it would start hurting, sometimes it would start discolouring, feeling numb and tingling and was still weak, but physical therapy helped a little with that. Then another few months, my other arm starts doing the same thing, the pain,the tingling, weakness and discolouration gets more frequent. Fast forward to the summer of 2006 both arms are so bad I can barely move them, and they hurt constantly, very badly and my the top of my back (scapula) have also started hurting a lot.

I saw a nuerologist who did an MRI on my brain and cervical area, a ultra sound on my arms, and an EMG on my arms and he found nothing. I then went to see a Rheumatologist about a month later who diagnosed me with Scapulaucostal syndrome, saying my scapula have turned at an angle, winged, and were rubbing into my ribs. I was in physical therapy for about six months and feeling better, not hurting as much, but I'm still very weak.

Then my neck starts hurting last May. There's lots of pressure, sometimes feels like my head is going to explode from the pressure. Two nights ago I couldn't even stand up for anhour and a half it hurt so much. This was was diagnosed as myofascial pain syndrome. However, my shoulder is still popping and I'm still weak, and hurts still sometimes. My newest physical therapist thinks my shoulder in unstable and that is what's causing everything.

We took an MRI and X-ray of my right shoulder and found nothing that could cause instabiliy. When he grabbed onto my ac joint and told me to pop my shoulder, I can usually do it at will, I couldn't. It also hurts a lot when there's any pressure around my shoulder. But my orthopedic surgeon wants to do exploratory surgery in a few days. But what can cause this instability that doesn't show up on an MRI or an X-ray? And if it's so common, why hasn't anyone found this out before four years?