Lumbar posterior marginal intra-osseous cartilaginous node

Area of Science:

• Orthopedics
• Radiology
• Spinal Surgery

Background:

• Lumbar and sciatic pain are common in adolescents and young adults.
• Unusual vertebral defects at L4/L5 have been linked to posterior ring apophysis fractures and herniated discs.
• Previous literature predominantly reported adolescent cases.

Purpose of the Study:

• To investigate the etiology of lumbar/sciatic pain in young patients with specific vertebral defects.
• To differentiate posterior marginal cartilaginous nodes from other spinal pathologies.
• To discuss the clinical and radiological implications of these nodes.

Main Methods:

• Retrospective analysis of 12 patient cases (8 young adults, 4 adolescents) with lumbar/sciatic pain.
• Review of radiological findings (vertebral defects, bony ridges).
• Literature review of 11 similar reported cases.

Main Results:

• All 12 patients presented with lumbar/sciatic pain and defects of L4/L5 vertebral bodies.
• A small bony ridge protruded into the spinal canal in affected patients.
• 11 similar cases were found in literature, mostly in adolescents.
• Absence of known trauma suggested a non-fracture etiology.

Conclusions:

• Posterior marginal cartilaginous nodes are suggested as the cause of these specific vertebral defects.
• These nodes are frequently associated with herniated discs and sciatic nerve root compression.
• The findings highlight the importance of considering cartilaginous nodes in young patients with these symptoms.