Meralgia paresthesia

Question 1

what is it?

Answer 1

a syndrome of paraesthesia or anaesthesia in the distribution of the lateral femoral cutaneous nerve (LFCN). It is an entrapment mononeuropathy of the LFCN, but can also be iatrogenic after a surgical procedure, or result from a neuroma.

Question 2

where does the lateral femoral cutaneous nerve originate from?

Answer 2

L2/3 segments

Question 3

epidemiology

Answer 3

30-40 years

both legs

men

diabetes

Question 4

Risk factors

Answer 4

Obesity
Pregnancy
Tense ascites
Trauma
Iatrogenic
Various sports have been implicated, including gymnastics, football, bodybuilding and strenuous exercise.
Some cases are idiopathic.

Question 5

symptoms

Answer 5

Burning, tingling, coldness, or shooting pain
Numbness
Deep muscle ache
Symptoms are usually aggravated by standing, and relieved by sitting
They can be mild and resolve spontaneously or may severely restrict the patient for many years.

Question 6

signs

Answer 6

Symptoms may be reproduced by deep palpation just below the ASIS (pelvic compression) and also by extension of the hip.

There is altered sensation over the upper lateral aspect of the thigh.

There is no motor weakness.

Question 7

Ix

Answer 7

pelvic compression test

US guided local anaesthetic

nerve conduction