Overview
Facet joints are small stabilising joints located between the vertebrae of the spine. When these joints become irritated due to degeneration, injury, or mechanical strain, they may cause persistent low back pain and stiffness.
A facet joint block is often used to help diagnose whether these joints are the source of pain. If the diagnostic block provides temporary relief, facet joint ablation may be considered. This procedure interrupts the small sensory nerves supplying the joint and may provide longer lasting pain relief.
Who This Treatment Helps
Facet joint block or ablation may be suitable for people with:
- Pain that worsens with bending, twisting, or prolonged standing
- Degenerative facet joint changes seen on imaging
- Morning stiffness in the lower back
- Low back pain that has not improved with conservative treatment
A consultation is required to confirm whether facet joint irritation is the most likely source of symptoms.
What Is a Facet Joint Block or Ablation
A facet joint block involves injecting local anaesthetic around the facet joint or the medial branch nerves that supply it. The goal is to determine whether the joint is responsible for the patient’s pain.
If the diagnostic block provides clear but temporary relief, facet joint ablation may be recommended. This procedure uses radiofrequency energy to interrupt the small sensory nerves supplying the joint, helping reduce pain while preserving normal spinal movement.
What to Expect During the Procedure
The procedure usually involves the following steps:
- Consultant review and treatment planning
- Comfortable positioning on the procedure table
- Image guided needle placement for accuracy
- A diagnostic facet joint block
- If appropriate, radiofrequency ablation for longer term relief
- Short monitoring period before discharge
The procedure is typically performed as a day case using imaging guidance to ensure precise treatment.
After the Procedure
After a facet joint block or ablation, it is common to experience:
- Temporary soreness at the injection site
- Gradual improvement in symptoms over the following weeks
- A return to normal activities as tolerated
Your consultant may also recommend physiotherapy or rehabilitation to support long term spinal health.
Benefits
- Helps identify whether facet joints are the pain source
- May reduce inflammation around the joint
- Facet joint ablation can provide longer lasting relief
- Minimally invasive with a short recovery period
Possible Risks and Side Effects
Possible risks and side effects include:
- Temporary increase in pain
- Bruising at the injection site
- Infection, which is rare
Your consultant will discuss the potential risks and expected benefits before treatment.
Safety Note
Please inform your consultant about your medical history, medications, and allergies before treatment so that the procedure can be planned safely.
Arrange a consultation to discuss whether facet joint block or ablation may be suitable for your low back pain.
You can also explore our low back pain treatments, view all pain treatments, or learn more about our minimally invasive procedures.