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Meralgia paresthetica: electrophysiologic study
Archives of Physical Medicine and Rehabilitation
|January 1, 1979
Summary
Nerve conduction velocity testing can diagnose meralgia paresthetica by identifying abnormal lateral femoral cutaneous nerve function. This objective diagnostic aid reveals nerve potential absence or slowed conduction velocity in affected individuals.
Area of Science:
- Neurology
- Neurophysiology
Background:
- Meralgia paresthetica is a condition causing pain and numbness in the thigh.
- Accurate diagnosis is crucial for effective treatment and management.
Purpose of the Study:
- To evaluate the utility of lateral femoral cutaneous nerve conduction velocity as a diagnostic tool for meralgia paresthetica.
- To establish normative values for nerve conduction velocity in healthy individuals.
Main Methods:
- Orthodromic sensory nerve conduction velocity studies were performed on the lateral femoral cutaneous nerve.
- Measurements were taken in 20 healthy control subjects and 9 patients diagnosed with meralgia paresthetica.
Main Results:
- The mean conduction velocity in control subjects was 57.51 m/sec.
- In patients with meralgia paresthetica, 6 showed absent nerve potential and 3 had slowed conduction velocity.
- One patient exhibited findings suggestive of asymptomatic entrapment neuropathy.
Conclusions:
- Conduction velocity of the lateral femoral cutaneous nerve is an effective objective diagnostic aid for meralgia paresthetica.
- Abnormalities in nerve potential or conduction velocity indicate nerve entrapment or damage.
- This electrophysiological test aids in diagnosing and understanding the pathophysiology of meralgia paresthetica.