Friend Stood Up To Walk Took 5 Steps And His

Friend stood up to walk took 5 steps and his hip and leg went into great pain. Found a huge blood clot in his leg that was applying pressure to a nerve. He was put on blood thinners to help with the clot but still remains unable to walk and still in great deal of pain. He has seen an Orthopaedic Dr. who missed the nerve being pushed . he has had physical therapy and now is in rehab for physical therapy. he walked 80 foot today but is still in a great deal of pain. we are at a loss as to why no one can figure out what is going on and where the pain is coming from . we just need some direction.