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Vertebral Motion Analysis (VMA)

Vertebral Motion Analysis (VMA) is an advanced diagnostic imaging technology designed to detect spinal ligament injuries that standard X-rays often miss. Traditional flexion and extension X-rays capture only two static positions, which can overlook abnormal motion between vertebrae. VMA, on the other hand, records continuous motion of the spine using digitized fluoroscopy, allowing physicians to precisely measure how each vertebral segment moves. This dynamic evaluation reveals ligamentous laxity, excessive translation, or abnormal angular displacement—key indicators of spinal instability. By identifying these subtle yet significant motion abnormalities, VMA provides a more accurate and objective assessment of spinal integrity and injury severity.

A Smarter Way to Find Spinal Injuries

At Precision Spine & Motion Imaging, we look beyond what standard scans can show. Traditional X-rays and MRIs only take still pictures of your spine. The problem? Many spinal injuries only show up when your spine is in motion. That means serious ligament damage can be missed on routine tests.

Even flexion-extension X-rays can overlook up to 30% of real injuries. That’s why we use Vertebral Motion Analysis (VMA) — an advanced test that measures how each vertebra moves in real time. This allows us to see even subtle instabilities that other scans miss.

We also use the medical gold standard called AOMSI (Alteration of Motion Segment Integrity) to classify and document these injuries. This approach gives your doctor clear, objective information that helps:

  • Pinpoint hidden ligament injuries
  • Guide better treatment planning
  • Support accurate documentation if your case involves insurance or legal claims

With VMA and AOMSI, you finally get the full picture of your spinal health — so nothing important is overlooked.

Vertebral Motion Analysis (VMA) helps identify

  1. Spinal Ligament Laxity / Instability (AOMSI)
    • VMA is the gold standard for detecting Alteration of Motion Segment Integrity (AOMSI).
    • It shows excessive or abnormal vertebral movement that indicates damaged ligaments.
    • This is often the hidden cause of chronic pain, instability, and disability after trauma.
  2. Cervical Instability After Whiplash / Trauma
    • In auto collisions and sports injuries, VMA reveals subtle ligament injuries in the neck.
    • These often don’t appear on MRI or static X-rays, but they explain persistent headaches, neck pain, dizziness, and nerve irritation.
  3. Lumbar Spinal Instability
    • In the low back, VMA detects segmental instability that contributes to disc herniations, degenerative disc disease, and sciatica.
    • This is key for patients with ongoing pain after conservative care or surgery.
  4. Post-Surgical Instability (Fusion / Laminectomy / Disc Replacement)
    • VMA identifies whether adjacent segments are moving abnormally following surgery.
    • Helps determine if symptoms are due to failed back surgery syndrome or new instability at nearby levels.
  5. Hidden Sources of Chronic Pain
    • Patients with ongoing spine pain often have no clear findings on MRI or CT.

VMA uncovers micro-instabilities from spinal ligament damage that explain symptoms and provide objective proof for both treatment planning and medico-legal cases.

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