Diagram of a vertebral column showing nerve root entrapment. It depicts the spinal nerve root and the area of entrapment in the spine.

Nerve Root Entrapment

Definition

Nerve root entrapment occurs when a spinal nerve root becomes compressed or irritated as it exits the spine, usually due to disc herniation, arthritis, or narrowing of the spinal canal.

Prevalence

Common in adults over 30. A major cause of radiating arm or leg pain.

Symptoms

  • Sharp, shooting pain in the arms or legs

  • Numbness or tingling

  • Muscle weakness

  • Pain worsened by coughing, bending, or sitting

  • Reduced reflexes

Diagnosis

  • Physical examination focusing on nerve function

  • MRI to identify compression

  • CT scan if MRI isn't suitable

  • EMG/nerve conduction studies in unclear cases

Treatment Options

  • Physiotherapy and posture correction

  • Anti-inflammatory medications

  • Epidural steroid injections

  • Surgical decompression when symptoms persist or worsen