I am a new member. I have experienced varying degrees of low back pain for about two years now. I have numbness in the right leg and down to my foot. Some periods of excruciating pain in my calf, outer knee area or outer ankle area which has "shut down" any physical activity at times. I have taken my dog for a walk, gotten to the corner and been in so much leg and foot pain that I wasn't certain if I could make it back home. I have been through physical therapy, rest, epidural steroid injection and the pain continues to grow in intensity. an MRI shows spondylolithesis and DDD with some lumbar stenosis. I went to a spine specialist who recommended a multi level fusion with an anterior/posterior approach. A second opinion confirmed the need for surgery, but only recommended one level of fusion: L4-L5 and said that he believes that the spondyl. at L4-L5 is the cause of the pain, so he recommends posterior transforaminal interbody fusion. I don't know what to do. I have read pluses for both and a negative for the multiple level as they don't offer a high level of success. I am in so much pain I just want to move forward.