I've got mild leg and arm symptoms from cervical problems - could be mild spinal cord injury from initial accident but to me it seems like it could be slowly getting worse and I do have herniated disc in contact with the spinal cord and mild thecal sac indentation. Symptoms like legs, feet, buttocks go numb easily, weak/heavy feelings in legs, coldness under skin in feet/up calves, *****ling feelings in legs, arms, torso, tingling/crawling feelings in feet, occasional muscle twitches, involuntary finger movement etc. etc. All fairly mild but not there before the injury - the most worrying one I get sometimes is waking with a numb/weak leg or arm though this seems to be happening less often (9 months since injury). I've also noticed a lot of stiffness in the legs - quads, hips, hamstrings, feet.
My initial injury I was temporarily paralysed from neck down for about 15 seconds, so I'm well aware that the cervical can impact legs/arms
If you do searches on cervical stenosis or cervical myelopathy you'll find more information.
I don't have any significant neck pain - bit of stiffness and slightly reduced range of motion and a bit of shoulder tension and sometimes mild localised pain at the herniation level. Had quite poor ROM to the left but this has improved recently after physio (though my left arm also went weak/numb during the night after the physio but it went away a little while after waking (few minutes or so). Also had a lot more tingling/pins/needles in leg the morning after the physio but thats gone as well.