Some joints have developed adhesions where the tissue has grown together. This can make a cracking noise when moved. Some joints when stretched make a popping sound like a suction cup when released. One thing we do know is that while there may be some noise with the adjustment usually there is no pain. The pain has usually occured at the time of the injury.
Research also shows the more movement a joint has the healthier it is.
Stiff joints lead to osteoarthritis. The Doctors will tell you what to do at the time they see you. It always helps to arrive a little early for you appointment to relax. If your schedule is busy, be sure to tell the receptionist so that we can give you every consideration. It also helps to wear loose clothing for ease of movement.