 [ Symptoms ] i have had 4 back surgeries i have been having a lot of pain especially when i bend forward [ Disease ] hi hope i understand correctly you did l1 4 fusion then you had l5 anterolisthesis this is normal after such fusion surgery your doctor should have explained it could happen however if l4 anterolisthesis happens it means surgery went wrong unfortunately another surgery is a must in both cases until then wear a back brace this happened because all the back movement is focused on one or two vertebrae only good luck