Complications during lumbar selective nerve root block: a scoping review - Scorecard - MDSpire

Complications during lumbar selective nerve root block: a scoping review

  • By

  • Anna Frøbert Welinder

  • David Kocemba

  • Viktor Hartmann Kuang

  • Mikkel Mylius Rasmussen

  • December 20, 2025

  • 0 min

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Clinical Scorecard: An Overview of Complications Associated with Lumbar Selective Nerve Root Block Procedures

At a Glance

CategoryDetail
ConditionLumbar radiculopathy associated with degenerative spine conditions
Key MechanismsImage-guided injection of local anesthetics and/or corticosteroids near affected nerve root to reduce inflammation and alleviate radicular symptoms
Target PopulationAdult patients (≥ 18 years) with degenerative spinal conditions
Care SettingInterventional pain management and diagnostic procedures in outpatient or surgical preparation settings

Key Highlights

  • Selective nerve root block (SNRB) is used both therapeutically in the subacute phase and diagnostically prior to surgery.
  • Complications associated with lumbar SNRB are diverse and classified using CTCAE categories, including nervous system, vascular, infectious, and procedural complications.
  • This scoping review systematically maps complication types, frequencies, and severities, highlighting the need for comprehensive evaluation given the high frequency of SNRB procedures.

Guideline-Based Recommendations

Diagnosis

  • Use image guidance to precisely target the affected nerve root during SNRB.
  • Employ SNRB as a diagnostic adjunct prior to surgical intervention in degenerative lumbar radiculopathy.

Management

  • Consider conservative management as the initial approach before SNRB.
  • Use SNRB with appropriate injectate volume tailored to diagnostic or therapeutic intent.

Monitoring & Follow-up

  • Monitor patients for a broad range of potential complications classified by CTCAE criteria.
  • Track complication rates both per procedure and per patient to assess safety.

Risks

  • Be aware of nervous system disorders, vascular and cardiac complications, infections, and procedural injuries as potential risks.
  • Recognize that complications can range from mild/moderate (CTCAE grades 1-2) to severe (grades 3-5).

Patient & Prescribing Data

Adults with degenerative lumbar spine conditions undergoing SNRB

SNRB involves targeted injection of local anesthetics and/or corticosteroids with variable volume depending on diagnostic or therapeutic purpose; complication rates vary and require careful consideration.

Clinical Best Practices

  • Employ standardized definitions and classifications of complications using CTCAE criteria for consistent reporting.
  • Use image guidance modalities and contrast agents to enhance procedural accuracy and safety.
  • Collect and report detailed data on injectate type, volume, and imaging modality to better understand complication profiles.

References

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