Facet joint injections can work in two stages. Some patients notice immediate pain relief from the local anaesthetic, but this is usually temporary. The steroid medication takes longer to work, typically starting within 2 to 7 days, with full benefit sometimes taking up to 2 weeks.
At Alton Pain Clinic, all facet joint injections are performed using ultrasound guidance to ensure accurate placement and effective delivery of the medication.
What to Expect After the Injection
- First few hours: Possible immediate relief from local anaesthetic
- 24–48 hours: Some soreness or temporary increase in discomfort
- 2–7 days: Gradual improvement as steroid starts to work
- Up to 2 weeks: Full effect may become more noticeable
Why It Can Take Time
The steroid works by reducing inflammation inside the facet joint, and this process is gradual rather than instant. Everyone responds differently depending on:
- Severity of inflammation
- Duration of symptoms
- Underlying spinal condition
Why Some People Respond Faster Than Others
Response time can vary depending on:
Severity of inflammation
More inflamed joints may take longer to settle.
Duration of symptoms
Long-standing pain may take more time to improve.
Activity levels after injection
Overexertion too soon can delay improvement.
Underlying spinal changes
Arthritis or degenerative changes may affect response.
What Is a Normal Response Pattern?
It is completely normal to experience:
- No change for the first couple of days
- Mild soreness after the procedure
- Gradual improvement rather than sudden relief
- Fluctuating pain levels during the first week
A delayed response does not mean the injection has failed.
Does Ultrasound Guidance Improve Results?
Yes. At Alton Pain Clinic, ultrasound guidance helps by:
- Ensuring accurate placement into the target area
- Reducing the chance of medication missing the joint
- Improving precision in complex spinal anatomy
- Supporting safer, more consistent outcomes
While it does not change how fast the steroid works biologically, it helps ensure the medication is delivered exactly where it is needed.
What Helps the Injection Work Better?
You can support recovery by:
- Taking it easy for the first 24–48 hours
- Avoiding heavy lifting or strenuous activity initially
- Gradually returning to normal movement
- Staying active in a controlled, gentle way
Movement (once comfortable) is often important for longer-term improvement.
This article is intended for informational purposes only and should not replace professional medical advice. If you are experiencing persistent symptoms, please consult a qualified clinician.
Frequently Asked Questions
Do facet joint injections work straight away?
You may feel immediate relief from the local anaesthetic, but this is temporary and usually lasts only a few hours.
Why do I feel worse before I feel better?
A mild “steroid flare” can occur in the first 24–48 hours, causing temporary discomfort before improvement begins.
How long should I wait before deciding if it has worked?
Most clinicians assess response after 2 to 3 weeks, as this allows the steroid time to fully act.
What if I don’t feel any improvement?
If there is no improvement, your clinician may review whether the facet joint is the main source of pain or consider alternative treatments.
Are ultrasound-guided injections more effective?
Ultrasound guidance improves accuracy, which can support better targeting of the painful joint and potentially improve outcomes.