Praxis Medical Insights

Advanced imaging (MRI or CT) is essential for proper patient selection for facet joint procedures as it helps rule out other causes of spinal pain such as herniated disks, spinal stenosis, fractures, or tumors 1
Imaging studies are necessary to confirm facet joint pathology and exclude alternative diagnoses that could be causing the patient's symptoms 1, 2
CT scans are particularly useful for evaluating facet joints and neural foramina, while also helping with preoperative planning for interventional procedures 1
Documented evidence of pain reduction is critical for determining the appropriateness of repeat procedures 3, 1

Evidence Supporting These Requirements

The American College of Radiology's Appropriateness Criteria states that imaging studies are necessary to rule out other causes of spinal pain before proceeding with interventional procedures 1
CT lumbar spine without IV contrast can assess facets and neural foramina and is equivalent to MRI for predicting significant spinal stenosis 1
Some studies suggest SPECT/CT may help identify the source of low back pain, particularly when related to facet arthropathy 1
North et al. found that 45% of patients with greater than 50% reduction in back pain after diagnostic facet blocks reported at least 50% relief at long-term follow-up after RFA, compared to only 13% of those who did not respond to initial blocks 3

Performing facet joint procedures without proper imaging can lead to misdiagnosis of the pain generator 1, 2
Performing facet joint procedures without proper imaging can lead to treatment of the wrong spinal level 1
The American College of Radiology recommends using advanced imaging to rule out other causes of spinal pain before proceeding with interventional procedures 1
The British Journal of Anaesthesia suggests that other treatment modalities should be considered if imaging criteria are not met 2