LUMBAR SPINE FLEXION & EXTENSION X-RAY SCAN

Why this dynamic X-ray matters

Unlike a standard static image, a lumbar spine flexion & extension x-ray scan captures your lower back while you bend forward and backward. This motion reveals hidden instability, slipped vertebrae, or abnormal movement that can be missed in still pictures.

Quick facts for patients & caregivers

• Scan time: 10–15 minutes
• Cost: Significantly lower than an MRI
• Same-day report: Available at most Cadabams centres
• No needles or contrast dye

What is Lumbar Spine Flexion & Extension X-Ray Scan?

Definition & imaging technique

The test is a dynamic radiograph where two images are taken: one in full forward bend (flexion) and one in full backward bend (extension). The radiologist then compares the position of each vertebra to see how much it shifts or tilts.

How flexion and extension views differ from static X-rays

• Static X-ray gives a single snapshot; dynamic views show real-time movement.
• Detects micro-instability that may not appear at rest.
• Useful when MRI shows age-related changes but pain source is unclear.

Types of Lumbar Spine Flexion & Extension X-Ray Scan

Standing vs. supine positioning

• Standing: Shows gravity’s effect on the spine—preferred at Cadabams.
• Supine: Used if pain prevents standing, but less sensitive.

Single-level vs. full-lumbar protocols

• Single-level: Focuses on one suspect vertebra (faster, lower dose).
• Full-lumbar: Screens L1–S5 (standard unless requested otherwise).

Intervertebral translation: How far one vertebra slides over another

• Intervertebral angulation: Change in tilt angle between vertebrae
• Disc height changes: Narrowing or widening during motion
• Facet alignment: Detects joint subluxation or arthritis

• Low-back pain of unknown origin after conservative therapy fails
• Post-trauma follow-up after fall or road accident
• Monitoring spondylolisthesis (slipped vertebra) progression
• Pre-surgical planning for spinal fusion

Symptoms & red-flag indications

• Persistent low-back pain lasting >6 weeks
• Pain that worsens with movement or activity
• Leg numbness or weakness after minor strain
• Clicking or slipping sensation in the lower back

Age groups & occupational risk profiles

Benefits of Taking the Lumbar Spine Flexion & Extension X-Ray Scan

• Dynamic assessment of instability in minutes
• Cost-effective: Usually 60–70 % cheaper than an MRI
• No appointment waiting lists at Cadabams Diagnostics
• Compact digital files—easy to share with orthopaedic surgeons

Illnesses Diagnosed with Lumbar Spine Flexion & Extension X-Ray Scan

• Spondylolisthesis (forward slip of vertebra)
• Degenerative disc disease causing abnormal motion
• Lumbar spinal instability after laminectomy
• Hidden fractures in elderly patients

• Clothing: Wear loose cotton attire; avoid zippers, buttons, or metal prints.
• Jewellery: Remove waist chains, belts, and piercings.
• Food & medication: No fasting required; continue regular medicines.

Pre-requisites Lumbar Spine Flexion & Extension X-Ray Scan

• Pregnancy screening: Mandatory for females 12–55 years via questionnaire or urine test.
• Recent imaging history: Bring old X-rays, CT, or MRI CDs for comparison.

Best Time to Take the Lumbar Spine Flexion & Extension X-Ray Scan

• Morning: Ideal if stiffness is worst after sleep.
• Post-physiotherapy: Wait 2 hours to avoid motion artefacts.

Eligibility

• Pregnancy (relative)
• Severe scoliosis preventing flexion/extension
• Unhealed surgical wound over lumbar area

Procedure for Taking a Lumbar Spine Flexion & Extension X-Ray Scan

1. Check-in: Verify identity and consent form.
2. Positioning: Stand sideways to the detector; feet shoulder-width apart.
3. First image (flexion): Bend forward as if touching toes; hold while X-ray is taken.
4. Second image (extension): Bend backward gently; hold breath for 2 seconds.
5. Duration: 5–7 minutes per view; technologist reviews for quality.
6. Comfort tips: Ask for a stool if balance is an issue.

Caution Before Taking the Test

• Radiation safety: Inform staff if you are breastfeeding; temporary pause may be advised.
• Implants: Mention any spinal rods or stimulators—they may create artefacts.