How are entrapment neuropathies diagnosed

How are entrapment neuropathies diagnosed?

The presence of characteristic symptoms along with provocative maneuvers (e.g., Tinel’s sign) is usually adequate to support the diagnosis. Electrodiagnostic studies (nerve conduction velocities and electromyography) are often used to confirm and localize the site of entrapment, although this study can be normal in 10% to 25% of patients who have a definite entrapment neuropathy.

When are electrodiagnostic studies indicated?

  • • When the diagnosis is uncertain; however, clinical suspicion should take precedence as even those with clinically apparent entrapment neuropathies can have normal electrodiagnostic studies.
  • • To exclude radiculopathy or polyneuropathy.
  • • To follow the course of patients being treated conservatively.
  • • Before surgery.

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