<prompt> Meralgia paresthetica is due to involvementinjury of which of the following nerve ?Medial cutaneous nerve of thighLateral cutaneous nerve of thighSural nerveFemoral nerve  <response>: Meralgia paresthetica is due to the involvement of lateral cutaneous nerve of thigh . type - idiopathic , spontaneous , iatrogenic clinical features - pain ,numbness, paresthesia along the anterolateral aspect of thigh Diagnostic test -if there is relief if pain after paresthesia after injecting local anaesthetic treatment : conservative - idiopathic : improve by removal of compressive agent ,NSAIDS local steroid injection - iatrogenic : care should be exercised during pelvic surgery : surgery - neurolysis or transection of the nerves REF:textbook of ohopedics, John Ebenezer,4th edition,pg.no.347 