They aim for pain relief
However pain relief does not guarantee improved function
Has to be referenced against accepted normal values for age, gender, race etc.
Lack of nerve function
Lack of brain function, Parkinson's dz, Dementia
degree of bending
degree of movement
Pain drives people to do something about it
But some people avoid pain relief
Hopi ear candles
Osteopathy & Chiropractic, Talk to Simon Singh
How is potency of pain killer measured? How does a potent pain killer work for an individual? How do you evaluate it? All you have is the patients word?
Be careful with the numbers they may mean little. Big numbers can mean poor compliance!!
Smoking or not?
Duration of treatment