Overview
Each spinal nerve supplies sensation and movement to a defined area of the leg. When a particular nerve root is irritated due to disc bulge narrowing inflammation or degenerative changes it may cause pain numbness tingling or weakness along a specific pattern.
A lumbar nerve root block targets one nerve root at a time allowing accurate diagnosis and focused pain relief. The response to the injection helps guide further treatment decisions.
Who This Treatment Helps
Lumbar nerve root blocks may be considered for people with
• Leg pain following a clear nerve distribution
• Suspected irritation of a single nerve root
• Disc related leg pain
• Persistent symptoms not responding to conservative care
• Diagnostic clarification before further procedures or surgery
A consultation is required to confirm suitability.
What Is a Lumbar Nerve Root Block
Using imaging guidance a fine needle is placed next to the targeted nerve root. A small amount of local anaesthetic with or without steroid is injected. Relief following the injection helps confirm that the nerve is the source of symptoms.
The steroid may also reduce inflammation and provide longer lasting pain relief.
What to Expect During the Procedure
Consultant assessment and planning
Comfortable positioning on the procedure table
Local anaesthetic to numb the skin
Image guided needle placement
Targeted medication delivery
Short observation period
After the Procedure
It is normal to experience
• Temporary numbness or weakness in the leg
• Mild soreness at the injection site
• Gradual improvement in symptoms
Most people return to normal activity the next day.
Benefits
• Identifies the exact source of nerve pain
• Reduces inflammation around the affected nerve
• Minimally invasive
• Guides further treatment planning
• May reduce the need for unnecessary procedures
Possible Risks and Side Effects
Possible risks include
• Temporary increase in pain
• Local bruising
• Infection rare
• Bleeding
• Allergic reaction
• Very rare nerve irritation
Safety Note
Please inform your consultant about medications allergies or medical conditions before treatment.
Arrange a consultation to discuss whether a lumbar nerve root block may be suitable.