Intervertebral vacuum phenomenon

Principle and interpretation

It can reflect pressure changes and clefts in a degenerated disc. The vacuum is not an air pocket to fill and does not prove absence of infection.

Indications, limitations and precautions

The sign is interpreted with endplate condition, surrounding tissues and clinical findings. It does not alone identify a pain source or determine a surgical indication.

Points to consider

An imaging sign describes an appearance that may have several explanations. Distribution, extent, other sequences and previous studies contribute to interpretation. The radiologist’s conclusion should be correlated with symptoms and examination before treatment is selected.

Role of TAGMED care

At TAGMED, assessment aims to understand symptoms, history and functional limitations. Manual care and osteopathy, motorized spinal decompression, laser and shockwave have different indications. The term described in this entry is not enough to select any of these modalities. Their relevance, limitations and possible contraindications should be discussed in relation to diagnosis and individual goals.

Related concepts and distinctions

These concepts belong to the same field, but are not synonyms.

• Osteolysis — Localized reduction or destruction of bone, seen as tissue loss or reduced density depending on the imaging technique.
• Disc–nerve root conflict — Unfavorable relationship between a disc and nerve root, described on imaging as contact, displacement or compression depending on degree.
• Bone sclerosis — Increased apparent density or mineralization of a bone region on imaging, which can reflect different processes.

Medical references

1. American College of Radiology / RSNA, RadiologyInfo. Spine MRI.
2. Radiological Society of North America. RadLex Radiology Lexicon — terminology resource.

References document the topic; their inclusion does not imply endorsement of TAGMED services by those organizations.