Foraminal Stenosis Treatment in Germany

Foraminal stenosis is a narrowing of the intervertebral foramen (foramen intervertebrale) through which the spinal nerve exits. Unlike central stenosis, foraminal stenosis compresses a specific nerve root, causing pain, numbness and weakness in its innervation zone. The disease most commonly develops in the lumbar and cervical spine in patients over 50 years old. Germany employs precise diagnostic methods and minimally invasive decompression techniques, including innovative MIBRAR® therapy.

What is foraminal stenosis

The intervertebral foramen is a bony canal bounded by vertebral bodies, the facet joint, and the intervertebral disc. The spinal nerve, artery and veins pass through it. Normally, the foramen diameter is 8–12 mm and ensures free passage of the nerve. When narrowed to 4 mm or less, the nerve is compressed — resulting in radicular syndrome (radiculopathy).

Foraminal stenosis can be unilateral or bilateral, affecting one or multiple levels. Most commonly affected are levels L4–L5, L5–S1 (lumbar) and C5–C6, C6–C7 (cervical).

Causes

1. Disc degeneration — loss of intervertebral disc height leads to vertebral "settling" and foramen narrowing. Most common cause.
2. Facet joint arthritis — facet joint hypertrophy with osteophyte formation that protrudes into the foramen.
3. Disc herniation — lateral or foraminal herniation compresses the nerve directly in the foramen.
4. Spondylolisthesis — vertebral slippage deforms the foramen.
5. Ligamentum flavum hypertrophy — ligament thickening in degenerative processes.
6. Postoperative scarring — fibrosis after previous interventions (FBSS).

Symptoms

• Radicular pain — sharp, shooting pain along the nerve: into the leg (lumbar) or arm (cervical).
• Numbness and tingling — in the innervation zone of the affected root.
• Muscle weakness — reduced strength in foot, lower leg (lumbar) or hand, forearm (cervical).
• Worsening with load — pain increases with walking, standing, extension and rotation of the spine.
• Relief with forward bending — flexion increases foramen space.
• Neurogenic intermittent claudication — in lumbar stenosis: weakness and leg pain when walking, relieved at rest.

Warning symptoms (require emergency consultation): urinary dysfunction, perineal numbness, progressive weakness in both legs — signs of cauda equina syndrome.

Diagnosis

1. Neurological examination — tests for radicular symptoms (Lasègue, Spurling), assessment of reflexes, sensation and muscle strength.
2. MRI — gold standard. Visualization of soft tissue structures: disc, ligaments, nerve. Oblique cuts through the foramen are most informative.
3. CT — detailed bone structures: osteophytes, calcifications, facet joint arthritis.
4. X-ray with functional tests — detection of instability and spondylolisthesis.
5. Electroneuromyography (ENMG) — objective assessment of nerve damage degree.
6. Selective nerve root block — diagnostic anesthetic injection under fluoroscopic guidance. Confirms lesion level and predicts surgical outcome.

Conservative treatment

• Drug therapy — NSAIDs, gabapentin/pregabalin (for neuropathic pain), muscle relaxants, B vitamins.
• Epidural injections — transforaminal administration of corticosteroid and anesthetic under fluoroscopic guidance. 60–75% effectiveness for acute component.
• Physical therapy — flexion exercises (Williams method), core strengthening, traction, manual therapy.
• Bracing — lumbar corset during exacerbation period.

MIBRAR® therapy

Foraminal stenosis is included in the list of indications for MIBRAR® technology (individual assessment). Prof. Babayan's method aims to eliminate causes of foramen narrowing without open surgery.

MIBRAR® for foraminal stenosis:

• Intervertebral disc regeneration — restoring disc height increases foramen space.
• Facet joint regeneration — cartilage restoration reduces hypertrophy and nerve pressure.
• Nerve root regeneration — neurotrophic factors in ARK promote damaged nerve recovery.
• Anti-inflammatory effect — anti-inflammatory factors in ARK reduce swelling and pain without cortisone.

The procedure is performed on an outpatient basis under Sono Control Arm™ ultrasound guidance (0.1 mm precision). Exclusively autologous material is used.

Surgical treatment

Surgery is indicated when conservative treatment fails (6–12 weeks), with progressive neurological symptoms or cauda equina syndrome:

1. Endoscopic foraminotomy — foramen expansion through endoscope (7 mm). Minimal trauma, same-day discharge. Gold standard for isolated foraminal stenosis.
2. Microsurgical foraminotomy — nerve decompression under operating microscope through minimal incision (2–3 cm).
3. Laminectomy + foraminotomy — for combined foraminal and central stenosis.
4. Spinal fusion — segment stabilization with concomitant instability or spondylolisthesis.

Treatment cost

All treatment prices in Germany.

Advantages of foraminal stenosis treatment in Germany

• precise topical diagnostics (MRI with oblique cuts + selective block);
• MIBRAR® therapy — regeneration of disc, facet joint and nerve without surgery;
• endoscopic foraminotomy — decompression through 7 mm puncture with same-day discharge;
• robotic navigation for spinal fusion;
• treatment in specialized clinics with Russian-speaking support.