Dear caz:

I guess that I am of a different opinion.

*I cannot see that a pelvic misailignment as permanent unless there is physical damage or neurological causes or some other factor that is a medical condition.* I have treaterd several people with long standing misaligmemnts with resolution of the misalignment in the majority that lasts unless there are ergonomic factors wich produce RSI or trauma injuries.

Many feel that idiopathic Wikipedia reference-linkscoliosis is permanent, but opinions change as more research is done.* I am treating a paitnet with idiopathic scoliosis of forty years ago and with the new research we are getting very pronounced changes that will be confirmed by an Wikipedia reference-linkMRI in late December.

The assessment of the pelvis using the four sided test with landmarks and hip abduction give the necessary information to treat these type of problems.
Hope that this is of benefit to you.
Sorry that I am in* another country as your case would be of interest in the research project.
Best regards,Neuromuscular.