My husband is 63 and 25 days ago he underwent bypass surgery and he had a cardiac catherization 2 days prior to the surgery. My question is why is he having alot of pain,burning and numbness in his right leg(catherization leg) 3 weeks later? The vains were grafted from his left leg and there is no pain there.The pain,burning and numbness radiates down the front of his leg to the knee and does not go away. Could a nerve have been effected by the procedure? or is this normal.