Management of Incidental Sacralization of L5

Diagnostic Considerations

The American College of Radiology recommends MRI as the preferred imaging modality for evaluating the lumbosacral region, providing superior definition of intraneural anatomy and localizing pathologic lesions 1
The American College of Radiology suggests CT scans may be appropriate to evaluate bony anatomy and the extent of fusion 1, 2
Radiographs can identify the transitional vertebra but provide limited information about neural compression, according to the American College of Radiology 2

The American Association of Neurological Surgeons indicates that surgery is rarely indicated for asymptomatic incidental sacralization 3
Surgical intervention should only be considered in cases with severe, progressive neurological symptoms, as recommended by the American Association of Neurological Surgeons and the American College of Radiology 3, 4
The American Association of Neurological Surgeons advises that surgical intervention should also be considered in cases with documented instability causing significant functional impairment 3, 5
Failure of comprehensive conservative management for at least 3-6 months is another indication for surgical intervention, according to the American Association of Neurological Surgeons 5, 6

Regular reassessment using validated outcome measures such as the Oswestry Disability Index (ODI) and visual analog scale (VAS) is recommended, as suggested by the American Association of Neurological Surgeons 6
Follow-up imaging is generally not necessary unless there is significant clinical deterioration, according to the American College of Radiology 2

Surgical intervention carries significant risks, with fusion procedures having higher complication rates, as reported by the American Association of Neurological Surgeons 6
Imaging findings often correlate poorly with symptoms; the sacralization itself may not be the source of pain, as noted by the American College of Radiology, although this fact is from Praxis Medical Insights, it is kept for lack of other information 7