One root, precisely
Medication is placed around a single irritated root under imaging guidance — the most selective injection in pain therapy.
Treatments · Interventional Pain Management
Selective Nerve Root Block
A selective block of an individual nerve root, used within interventional pain management.
What it is
Treatment aimed at a single nerve
A selective nerve root block delivers anaesthetic plus anti-inflammatory medication to exactly one root through its exit foramen. It is the meeting point of diagnosis and therapy: precise enough to name the culprit, therapeutic enough to settle it.
Diagnosis plus therapy
Beyond confirming the culprit level, the steroid component treats its inflammation, so one procedure both maps and manages.
Settling acute flares
A severely irritated root driving acute radiating pain can often be quieted without an operation.
Sharpening surgery
If the block fails, the information still counts — a negative result redirects the plan before anything irreversible.
What to expect
A brief, precise appointment
The procedure itself is short and performed with you awake, so you can report what you feel throughout.
01
Transforaminal path
The needle travels through the nerve exit under continuous X-ray guidance, with contrast confirming the spread around the root.
02
Medication effect
Anaesthetic gives immediate feedback — including brief weakness or numbness in that root's territory; the steroid builds over subsequent days.
03
Aftercare
Rest briefly, arrange a driver, and report fever, worsening pain, new weakness or bladder changes promptly.
Common questions
Things patients ask us
How long does the relief last?
It varies widely. Some roots settle durably after one block; others need staged care. Temporary numbness or weakness in the blocked root is expected and fades.
How many blocks will I need?
As few as achieve the goal. Your surgeon spaces treatments and stops when they no longer add benefit.
What are the risks?
Brief soreness, flushing and transient numbness are commonest. Bleeding, infection and nerve injury are uncommon; blood thinners, diabetes and allergies are reviewed beforehand.
Will I still need surgery?
Not necessarily. Roots that settle with selective treatment often stay settled — and a well-mapped root makes any future surgery exact.
Could this help you?
Send your imaging and history. The ProSpine team will review your case and respond with the next steps.
Free · No obligation · Reviewed by the ProSpine team