Ive been chcked for blood clots, again the knee swelled twice the size they found nothing on cat scan, xrays and utra sounds produce no results, is it possible addemmaor nuerolotical disease.
How long ago was your car accident and what type of back injury did you sustain?
It is difficult to associate your current symptoms to the prior injury without additional information.
Swelling of the leg and foot can be related to peripheral vascular disease as well as other systemic conditions. Have you been to the doctor regarding these symptoms?
Further diagnostic testing may be indicated.
Post again with additional info and an update and we will try and assist you further.