I was hit by a truck while walking 2.5 months ago. I took most of the impact on my right shoulder and upper arm. Upon going for x-rays, they discovered, I had a deep muscle contusion. Within days of the accident, I started to experience spasms of pain from my shoulder straight down through my wrist. These spasms have become less frequent over time but I still get them. Every time I rotate my shoulder, it either cracks, grinds, pops or any variation of the three. I requested an MRI and the results stated that I had AC arthropathy. My orthopedist said that it was not from the accident, however. He claimed it was from (and I quote) "many, many years of overuse." I am a 27 year old female. I am also left-handed and never engaged in very strenuous upper body activities. I experience the pain in my right shoulder, which is where I got hit. Should I go for a second opinion? Can you explain to me what ac arthropathy is? It was really never explained to me.
Any information would be greatly appreciated!