by Yuliasir on February 1st, 2015, 4:45 am
practically it should be a lumbar spine to give you leg paresis. But if your throat spine is hypermobile, same should be your lumbar region, and the age makes the ligaments etc. even more weak so its mobility might even increase. Look, when MS patient experiences paresis due to lesion, the interruption in the neural conduction lasts ususally for several days/weeks, as long as the inflammatory process lasts, and when it stops, with the time certain mobility is restoerd etc. Becasue your paresis was lasting for a few minutes after you raised up from the supine position, one may suppose you have local and very transient damage, consistent with the movement of your vertebra.
I am not a doctor but what I know about nervous system function allows me to speculate in the following way: motor function is mediated by both motor cortex in the brain and by the local nerves coming from the spine. Brain pathologies (lesions, degradation, stroke) are usually accompanied by permanent loss of motility and are painful due to interruption of reflex arc in such a way that tesion becomes predominant (spastisity paralysis). Spine lesions causes also more or less permanent damage, but they are usually painless becasue disruption of the neural conductivity at the spine level causes so called weak paralysis, or paresis, and it is exactly what you felt - no pain, no numbness, just the leg does not exist any more for your brain becasue the brain does not feel signals from the spine. But, becasue your paresis was lasting exactly a few seconds or minutes, harldy it could be a myelin lesion, it should be something very reversible, like momentarily physical interruption, like something to switch out the nerve root, and this could be physical movement of the vertebra, on my point of view. So let's wait and see what doctors may figure out of your next MRI and spinal tap.
And I am happy to read you had 15 km walk (I personally hardly could walk a five in a row due to sedentary way of life).