The position I have found to be the most effective , in MSK treatment, is to assume referred events are taking place till proven otherwise, by thorough attention to the relevant Wikipedia reference-linkfacet joints with CM.
It is rare to find a peripheral joint pain problem not caused by direct trauma , that does not have a significant component of cause , by neuralgic means. certainly in cases where trauma has been a feature , this remains true, though there are cases obviously where local pathology plays a role. The point I make as I apply myself, is to remove that which can be easily removed first ( referred pain and other altered behaviours and sensations ) , such that effective testing may not then be blurred by false neuralgic positives. In most cases the pain and dysfunction ,certainly in LE, and numerous other peripheral joint problems , is entirely eliminated by this attention . Thus by hindsight , I have been able to show in many hundreds of cases over many years, that referred pain is , according at least to my own clinical evidence , the most common cause of MSK problems.