Iatrogenic
Failed back syndrome is a syndrome of chronic back pain after surgery
that was intended to treat back pain caused by different reasons, but
did not succeeded in bringing about any improvement.67It can be caused by disc remnants, recurrent disc herniation, damage to
nerves during surgery, operation on the wrong segment, spinal stenosis
or instability, epidural fibrosis, arachnoiditis, and infection. The
clinical picture depends upon etiology.67 Several
medications can cause back pain, for example: statins, bisphosphonates
(especially resindronate), aromatase inhibitors, isoretinoin and
carvedilol.68