Thank you both for your replys.
I am aware that it is an unusual and complex picture. I will try and answer questions to you both in this reply;

1. Not sure how to upload a picture - but the areas that hurt are my lower left leg medial aspect running down posterior to the medial malleolus and into my arch. It is quite a vague pain and not a spot I could put my finger on. The other area that hurts is my sacal area left side only wrapping round to the greater trochanter. I only get pain if I walk today I haven't left the house yet so no significant pain yet.

2. I do lots and lots of yoga and have no problems bending forward or back I'm flexible now having practised so much and from years of dance as a child. The only time in yoga I notice a pulling is when the left leg is adducted and flexed at the hip accross my body.

3. Wikipedia reference-linkMRI was to the left leg below knee and lumbar and sacral areas of the spine - to look for abnormality anything that may be impinging nerve.

4. Ultrasound was performed to guide a steroid injection to the Tarsal Tunnel in case any inflammation was causing the nerve to be impinged.

5. Burning at night - left foot burns and swells a bit if it gets hot at night - can't sleep with it under the douvet in any tempreture. I don't have a usual sleep position and have no back pain at night.

6. No problems with my discs show up on MRI or Xray.

7. I take Amytriptyline 25mg for nerve pain - this does help somewhat.

8. All ranges at all joints seem to be absolutely fine and sig loss of strength evident. My left gluts and adductors possibly not as strong as right so working these at the moment.

Thank you so much for reading this,