<human>: I have had 3back surgeries, most recent in January I m prone to have scar tissue I still have severe leg pain and now I have swelling in foot and leg pain is worse it forces me to stay off my feet I had ultra sound they ruled out blood clot I am waiting to have MRI in two weeks sometimes I feel like warm water is being poured over my leg real slowly from top to bottom I am worried about what s going on I m scared can you help
<bot>: Hi, I am Chat Doctor.  I have read your question and understand your concerns. Let me try to help you Question : What causes pain and swelling in leg after undergoing back surgery? Answer : The most common cause of Pain and Swelling in Leg after undergoing Back Surgery is a condition called as Deep Vein Thrombosis. Because your legs were immobile for long, the circulation in the veins of the leg had become sluggish and a thrombus (blood clot) has formed inside your veins A Vascular Surgeon will be able to cure this and make you alright Hope you found the answer helpful. If you need any clarification / have doubts / have additional questions / have follow-up questions, then please do not hesitate in asking again. I will be happy to answer your questions. Let me know if I can assist you further. Take care.