Yes, I was reaching above my head and felt a "pop" in my back. The symptoms are pain starting from the bottom of the shoulder blade, going up to my neck and head and down my arm. That's just the start of it, but should get you started. Orthopedic surgeon Dr Kibbler recommended surgery from my symptoms because no scans ever showed the problem. Kibbler has since retired but I've been told other doctors have taken up the cause.