@bobwhitecoldsnow - I just want to respond to your problem - specifically. It doesn't belong with all the other discussion IMHO. I believe you should find a physical therapist which will handle your problem. It took me two visits. All the creaking, popping, grinding was released. Its kinda like a knuckle in your finger needing to cracked. It will feel SO SO good when you have that released. I forgot why it happens. But it just needs to be cracked like a knuckle. The right therapist will know what to do. I am so sorry I forgot WHY it happened. I did have surgical surgery and everything got gummed up and stuck. Its kinda like a subluxation that chiropractors release in your back...only thing is they never repair it. You always have to go back. You just need a little manual release from a good physical therapist. It wasn't painful and it was done almost a year ago and hasn't returned.