Facet-joint injection
Medication is placed into or around a selected facet joint. It may contain local anaesthetic and sometimes corticosteroid. The purpose, evidence and suitability depend on the spinal region and individual clinical context.
Consultant-led private assessment
Facet Joint Pain and Medial Branch Blocks
Assessment for selected back or neck pain, with facet-joint injections or diagnostic medial branch blocks considered only when the clinical purpose and likely target are clear.
Scan findings interpreted in clinical context
Facet injections and diagnostic blocks distinguished
Radiofrequency considered only after appropriate selection
Private practice in Colchester and Ipswich
Dr Shamim Haider
Consultant in Pain Medicine and Anaesthesia. Careful assessment, clear diagnostic purpose and image-guided treatment where appropriate.
About Dr HaiderUrgent symptoms need a different route
New bladder or bowel disturbance, numbness around the genitals or bottom, rapidly worsening limb weakness, fever with severe spinal pain, or severe symptoms after significant injury require an appropriate urgent NHS or emergency assessment rather than a planned facet procedure appointment.
Understanding the joints
What are spinal facet joints?
Facet joints are small paired joints at the back of the spine. They help guide movement and contribute to spinal stability in the neck, thoracic region and lower back. Each joint receives sensory supply from small medial branch nerves.
Facet joints can show wear, inflammation or injury. In some people they may contribute to localised back or neck pain, sometimes with referred pain into the buttock, shoulder region or nearby areas.
These symptoms overlap with pain from discs, muscles, sacroiliac joints, nerve roots and other structures. No single symptom pattern proves that a facet joint is the principal pain source.
Facet wear on a scan is not automatically painful
Degenerative changes are common. Imaging can help exclude or understand other pathology, but treatment should not be offered simply because a report mentions facet arthropathy.
Assessment before procedure
Why clinical purpose matters
The consultation considers pain location, aggravating movements, function, neurological symptoms, examination, relevant imaging, previous treatment and competing pain sources.
The question is not simply “Are the facets worn?” It is whether a specific facet procedure would add useful diagnostic or therapeutic information and whether that information would change the treatment plan.
NICE advises against spinal injections for non-specific low-back pain. This is distinct from a diagnostic medial branch block used to select appropriately assessed patients for lumbar radiofrequency denervation.
Assessment asks four questions
- 1Is the pain pattern localised, radicular or mixed?
- 2Are there warning features or another more likely diagnosis?
- 3Is the proposed procedure diagnostic, therapeutic or both?
- 4How will the result alter the next treatment decision?
When to seek an opinion
When might specialist assessment help?
- Back or neck pain remains troublesome despite appropriate simpler treatment
- Pain is mainly localised rather than dominated by nerve-root symptoms
- The likely pain source remains uncertain after initial assessment
- Scan findings need to be interpreted rather than treated in isolation
- A diagnostic medial branch block has been suggested before radiofrequency denervation
- Previous facet injections or blocks need to be reviewed before deciding the next step
Not every assessment leads to a block
The next step may instead be rehabilitation, medication review, further investigation or assessment of a different spinal, neurological or musculoskeletal source.
Procedure terminology
Facet-joint injection or medial branch block?
Diagnostic medial branch block
A small amount of local anaesthetic is placed close to the medial branch nerves supplying selected facet joints. The short test period helps assess whether those nerves are a reasonable target for radiofrequency denervation.
The procedures are related but not interchangeable. Before proceeding, the patient and clinician should understand what is being injected, why, what response is expected and how the result will influence the next decision.
Image-guided procedure
What happens during a facet injection or block?
- 1The clinical purpose, alternatives and material risks are discussed before consent.
- 2Medicines, allergies, infection risk, relevant health conditions and pregnancy possibility are checked.
- 3You are positioned so the selected spinal region can be visualised and the skin is cleaned.
- 4Local anaesthetic is used; this can sting briefly and pressure or pushing sensations may occur.
- 5X-ray, fluoroscopy or another appropriate form of image guidance is used to position the needle accurately.
- 6Medication is placed into or around the selected joint or medial branch nerve according to the agreed procedure.
- 7You are monitored afterwards and given individual discharge and response-recording instructions.
Preparation is individual
Instructions about food, driving, escorts, anticoagulant or antiplatelet medicines, diabetes treatment and infection must come from the treating hospital and clinical team. Do not stop prescribed medicines without individual medical advice. Tell the team if you are planning to fly or travel abroad within the following week.
Sedation
Many blocks are performed with local anaesthetic. Sedation may be discussed for selected patients, but it can make immediate diagnostic pain reporting less straightforward and adds fasting, escort, recovery and driving requirements.
Interpreting a diagnostic block
Record pain and function during the test period
Use a planned comparison
Record pain before the procedure and during agreed safe activities afterwards. Note the timing, degree and functional significance of any change while the local anaesthetic should be working.
Avoid a simple yes-or-no conclusion
No response, partial response and substantial temporary response have different implications. The result must be interpreted alongside technique, usual activity, other pain sources and the agreed threshold used by the clinical or insurer pathway.
Possible next steps
What happens after the result?
Little or no meaningful change
The targeted facet medial branch pathway may be less likely to explain an important part of the pain, and the diagnosis and plan should be reconsidered.
Uncertain or partial change
The result may need careful review before any further procedure. Competing pain sources, activity during the test and technical factors may matter.
Meaningful temporary improvement
Radiofrequency denervation may be discussed if the overall clinical pathway supports it, while making clear that a positive block does not guarantee success.
Different pain pathway
Facet procedures are not nerve-root injections
Facet procedures target joints or their medial branch nerve supply. They do not decompress a nerve root or repair a disc. If leg pain, tingling, numbness or weakness suggests sciatica, the nerve-root pathway needs separate assessment.
Read about sciatica, nerve-root injections and selected pulsed radiofrequencyBalanced consent
Risks and limitations
No injection or diagnostic test is risk-free or perfectly accurate. The exact risk profile depends on the spinal region, target, medication and individual health.
Possible problems include temporary discomfort or increased pain, bruising or bleeding, infection, reaction to medication or contrast, and short-lived numbness or weakness if local anaesthetic spreads. Serious nerve injury is rare. Thoracic procedures carry a rare risk of pneumothorax.
If corticosteroid is proposed for a facet injection, individual effects and possible off-label use should be discussed where relevant. This page is general information and does not replace procedure-specific consent or hospital instructions.
Private appointments
Consultant-led care in Colchester and Ipswich
Self-pay and insured patients are welcome. A GP or specialist referral, relevant scan report and information about previous injections or blocks are helpful where available. Insured patients should confirm referral and authorisation requirements before treatment.
Oaks Hospital, Colchester
120 Mile End Road, Colchester, Essex CO4 5XR
Nuffield Health Ipswich Hospital
Foxhall Road, Ipswich, Suffolk IP4 5SW
Read about private pain care in IpswichFrequently asked questions
Questions about facet pain and medial branch blocks
No. MRI or other imaging can show arthritic or degenerative facet changes, but these are common and may not be painful. Imaging has to be interpreted alongside the pain pattern, examination, previous treatment and the purpose of any proposed diagnostic block.
No. A facet-joint injection places medication into or around the joint. A medial branch block places local anaesthetic close to the small nerves supplying selected facet joints. A medial branch block is commonly used for diagnostic selection before radiofrequency denervation.
No. Facet wear is common, especially with age. A scan abnormality does not establish that the joint is the main pain source or that an injection will help.
They are not designed to decompress a spinal nerve or treat a disc prolapse. Leg-dominant radicular pain or sciatica follows a different nerve-root assessment pathway.
Follow the individual instructions provided by the clinical team. Pain is often compared before and after the block during relevant, safe movements or normal activities while the local anaesthetic is expected to be active. Record both pain and functional change rather than relying on a general impression days later.
No. A meaningful temporary response supports the treatment rationale but does not guarantee benefit or a particular duration. Pain can have several contributors and diagnostic blocks are not perfect tests.
It is usually intended to provide short-term diagnostic information, although the duration of relief varies and some people experience longer benefit. No fixed response can be promised.
Do not assume that you can drive. Restrictions depend on the procedure, temporary numbness or weakness, and whether sedation is used. Follow the treating hospital's instructions and arrange an escort when advised.
Do not stop anticoagulant or antiplatelet medication without individual instructions from the clinical team responsible for the procedure. The plan depends on the medicine, why you take it and the procedural bleeding risk.
Further information
Reliable UK patient information
Faculty of Pain Medicine patient leaflets
These procedure-specific UK leaflets explain facet-joint injections, diagnostic medial branch blocks and the radiofrequency pathway.
NICE: Low back pain and sciatica
Recommendations on non-specific low-back pain, imaging, diagnostic medial branch blocks and radiofrequency denervation.
Visit sourceNICE quality statement
A patient-facing explanation of the positive medial branch block requirement before lumbar denervation.
Visit sourceNHS: Back pain
General information about back pain, self-care and warning symptoms requiring urgent assessment.
Visit sourceClinical information on this page is presented by Dr Shamim Haider, Consultant in Pain Medicine and Anaesthesia. It is general information, not a diagnosis or personalised treatment recommendation.
Book a private assessment
The first step is a consultation to decide whether the pain pattern supports a facet pathway, whether a diagnostic block would change management and whether another explanation or treatment should be considered.
View Colchester and Ipswich booking options