Mild Posterior Disc Bulge: Definition, Symptoms, and Management

A minimal-to-mild posterior disc bulge protrudes backward without significantly narrowing the central spinal canal or neural foramina.

Clinical Significance

• Often asymptomatic; incidental on MRI.
• If it contacts a nerve root or thecal sac → radiculopathy (pain, numbness, weakness in dermatomal distribution) or myelopathy.

Management

• Asymptomatic: surveillance, core strengthening, ergonomics.
• Symptomatic: PT, NSAIDs, epidural steroid injection; surgery only for progressive neurologic deficit or intractable pain.