Yes, I agree with you. It took me a year to get right diagnosis for my back pain until my piriformis muscle started to spasm. I went to a hip specialist because I thought it felt like my pelvic area. (I had my pubis synthesis separated in child birth 35 years ago). He said I needed a pain injection in the joint. My physical rehab specialist said the muscle not the joint in my case. I have piriformis syndrome. No surgery is needed. I had a nerve block to relieve pain and a muscle relaxant to stop the muscle from spasms. Yes. PT needs to be someone that area of the pelvic. Proper pelvic floor exercises.