Disc injuries are among the most common sources of spinal pain, yet they are also among the most frequently misunderstood. The term "slipped disc" — which implies that a disc has physically moved out of position — is technically inaccurate. Intervertebral discs are firmly attached to the vertebrae above and below; what changes in a disc injury is the integrity of the disc's outer ring (annulus fibrosus) and the position of the inner gel (nucleus pulposus) relative to the spinal canal.
Types of Disc Conditions
- Disc bulge (protrusion): the outer disc wall bulges outward without rupturing — common and often asymptomatic
- Disc herniation (extrusion): the inner disc material protrudes through a tear in the outer wall, potentially contacting a nerve root
- Disc sequestration: a fragment of disc material separates and moves within the spinal canal
- Degenerative disc disease: gradual loss of disc height and hydration with age, contributing to chronic spinal pain
Many disc bulges and herniations visible on MRI are found in people with no pain at all. Imaging findings must always be interpreted in the context of clinical symptoms.
How Chiropractic Treats Disc Conditions
The chiropractic approach to disc conditions is guided by the specific presentation. For acute disc herniation with nerve involvement, high-velocity manipulation of the affected segment is generally avoided. Techniques that may be used include:
- Flexion-distraction: a gentle, rhythmic technique that decompresses the affected disc level and can help centralise referred pain
- Mobilisation of adjacent segments: addressing restriction in segments above and below the affected level
- Soft tissue therapy: managing associated muscle guarding
- Exercise prescription: directional preference exercises (often extension-based for lumbar disc herniation)
- Neurodynamic techniques: nerve mobilisation to reduce neural tension
As the acute phase resolves, rehabilitation progressively addresses core stability and movement pattern retraining to reduce recurrence risk.
This article is intended for general information purposes only and does not constitute medical advice. Please consult a qualified health professional for assessment, diagnosis, and treatment tailored to your individual circumstances. Velca Allied Health, 10 Wellington Street, Howick, Auckland 2014.