Hi, this is classic B12 reduction, possibly accompanied by clickey middle finger. This has been known about in the US but kept quiet, or ignored in the EU.
You will get a load of manure and again so shall I about this as people say "you must not say that" "you are not a clinician" and a load of other baloney, however, slowly the medical proffession are accepting it.
However, cheapy test, you may wish to try a bit of Marmite with each meal and after a weekend the pain and movement restriction may be gone.
I have been blocked from another site for saying this, and poo pooed, however try it and please if it works then let us know .
A guy I know had been almost a cripple for 10 years, he owns a tyre place near Derval here in France. I gave him a jar of Marmite and the instructions on the Friday evening, Monday nite I was having a drink with him whilst he was using his left arm!
Apparently the B12 stops inflammation of joint previous damage, a reduction in the B12 causes them to get inflammed and hence sore.
Another friend went to our Diabetic clinic who had again poo ped this, he was also diagnosed with alzheimers. However the doctor sent him to Rennes hospital after I spoke to her without saying owt to nowt. She did not know we knew him!
Funnily enough his "alzheimers" improved, as did the pains in his hands after he was diagnosed and he was having B12 injections.
This is going to cost all but nothing to try.
Insulins that are seemingly of effect Novomix 30, Livemir, and libbys versions similar.
So please this is NOT a curative, but if it does help then please let your doctors know and also ask why in the event that some in the US knew about this why have they not acted!