ronnie,
Some 'shin splints' are found to be hyper activity of Tib post , at the effect of over pronated feet giving stretch relflexive impetus to recruitment of this anti pronation muscle. In these cases orthotics work a treat.
The above mentioned galaxy of pain however , clearly indicates referred pain and patterns of recruitment happening , with some of it L5 ( calves hams gluts ) and some of it L3/4 ( medial shin burning ). Unfortunately , the closer one looks at a referred pain event, the more likely it will be that , with the advantage of science and a host of instuments keenly dedicated to the proposal that pain and pathology go together, the more interesting features will come into view. It is also likely that in the absence of someone to turn off these referred events , that these "pathologies " will take centre stage , in the minds of both doctor and patient . It is regrettable , but doctors of medicine miss the boat a lot of the time when it comes to interpreting MSK problems. In most cases , certainly in my own long experience , it will be dysfunction and referred events driving pain etc , rather than things like this that or the other "itis ".
Takes a solid leap sometimes to leap out of that paradigm . I encourage you to consider it however as the way forward with seemingly perplexing problems that do not respond to treatment. Over time I have become more and more alert to neuralgic cause and find my treatment success very much better , than in the bad old days when I , like many on these pages , were convinced that local 'disease' was the common thread to be analysed .
I wish you well.