Lumbar Sympathetic Block in Cincinnati - APSI Wellness
Learn about lumbar sympathetic blocks for leg pain, CRPS, and vascular conditions. Expert treatment at APSI Wellness in Cincinnati.
Lumbar Sympathetic Block — A lumbar sympathetic block targets the sympathetic nerves along the lumbar spine to treat pain conditions involving the sympathetic nervous system, including CRPS and vascular pain in the legs.
What Is a Lumbar Sympathetic Block?
A lumbar sympathetic block is an interventional pain procedure that involves injecting local anesthetic (and sometimes other medications) near the sympathetic nerve chain along the front of the lumbar spine. The sympathetic nervous system controls involuntary functions like blood flow and sweating — and in certain pain conditions, these nerves become overactive and perpetuate chronic pain.
By temporarily blocking these nerves, the procedure can break the cycle of sympathetically maintained pain and improve blood flow to the affected limb.
How Does It Work?
The lumbar sympathetic chain runs along the anterolateral aspect of the lumbar vertebral bodies. In conditions like Complex Regional Pain Syndrome (CRPS) or peripheral vascular disease, these nerves amplify pain signals and constrict blood vessels.
The injection delivers:
Local anesthetic to temporarily block sympathetic nerve transmission
Corticosteroid (in some cases) to reduce nerve inflammation
The block interrupts the abnormal pain cycle and increases blood flow to the affected leg and foot
Conditions Treated
Complex Regional Pain Syndrome (CRPS) — Types I and II affecting the lower extremities
Peripheral vascular disease — reduced blood flow to the legs and feet
Phantom limb pain — persistent pain after lower limb amputation
Hyperhidrosis — excessive sweating in the lower extremities
Neuropathic pain — nerve-related pain in the legs not responsive to other treatments
Raynaud's phenomenon — affecting the feet
What to Expect During the Procedure
Before: You may need to stop blood-thinning medications. Baseline temperature measurements of the affected limb may be taken.
During: You'll lie face-down on a procedure table. Using fluoroscopic guidance, the physician places a needle along the anterolateral surface of the L2 or L3 vertebral body. Contrast dye confirms proper spread before the blocking agent is injected. The procedure takes approximately 20-30 minutes.
After: A successful block often produces a noticeable increase in warmth and decreased pain in the affected leg within 15-30 minutes. Temperature monitoring confirms the sympathetic block. You'll be observed for 30-60 minutes. Some patients experience temporary leg weakness from spread of anesthetic to nearby somatic nerves.
Benefits
Can provide dramatic pain relief for sympathetically maintained pain
Improves blood flow to the affected extremity
May break the cycle of CRPS if performed early
Diagnostic value — confirms sympathetic nerve involvement
Can be repeated in a series for cumulative benefit
Minimally invasive outpatient procedure
Risks and Side Effects
Temporary leg weakness or numbness (resolves in hours)
Groin pain (temporary)
Hypotension (low blood pressure, temporary)
Injection site soreness
Rare: genitofemoral nerve irritation, vascular injury, infection
Frequently Asked Questions
How many lumbar sympathetic blocks will I need?
Many patients undergo a series of 3-6 blocks, typically spaced 1-2 weeks apart. Each successive block may provide longer-lasting relief. Some patients achieve lasting improvement after a single series.
How long does the pain relief last?
Individual blocks may provide hours to weeks of relief. With a series of blocks, cumulative relief can last months. In some CRPS patients, early aggressive treatment can lead to lasting remission.
Will my leg feel weak after the block?
Temporary leg weakness can occur if the local anesthetic spreads to nearby motor nerves. This is short-lived and typically resolves within a few hours. You should plan to have someone drive you home.
Is this procedure used only for CRPS?
No. While CRPS is the most common indication, lumbar sympathetic blocks are also used for peripheral vascular disease, phantom limb pain, and other conditions involving sympathetic nerve dysfunction in the lower extremities.
What if the block doesn't help my pain?
If a lumbar sympathetic block doesn't provide relief, it suggests your pain may not be sympathetically maintained. Your physician will explore alternative diagnoses and treatment options.
APSI Wellness — Advanced Pain Solutions & Interventions
5405 DuPont Circle Suite A, Milford, OH 45150 | Phone: (513) 936-3050
https://apsiwellness.com/services/lumbar-sympathetic-block