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Thermography by Specialty
Published in James Stewart Campbell, M. Nathaniel Mead, Human Medical Thermography, 2023
James Stewart Campbell, M. Nathaniel Mead
The lateral femoral cutaneous nerve of the thigh is a purely sensory nerve that supplies sensation to the upper lateral leg, extending as far as the knee (Figure 11.29). It exits the pelvis just lateral to the psoas tendon, where it can be compressed or damaged, causing numbness and possibly burning pain (meralgia paresthetica) over the lateral upper leg. The compression syndrome may be caused by chronic use of weight-bearing belts, heavy body armor, tight clothing (“skinny jeans syndrome”), or pressure from body positions such as leaning over the hood of a car for long periods. If numbness is the only symptom, many people will be unaware that the condition exists.
SBA Answers and Explanations
Published in Vivian A. Elwell, Jonathan M. Fishman, Rajat Chowdhury, SBAs for the MRCS Part A, 2018
Vivian A. Elwell, Jonathan M. Fishman, Rajat Chowdhury
Meralgia paraesthetica is a painful mononeuropathy of the lateral femoral cutaneous nerve, commonly caused by focal entrapment of this nerve as it passes through the inguinal ligament. Treatment is based on symptoms. Weight reduction, less compressive clothing, non-steroidal anti-inflammatory drugs (NSAIDs), local anaesthetic infiltration, and surgical release have been described as treatment modalities.
Advances in the Treatment of Meralgia Paresthetica in Surgery of the Hip Joint in Adults
Published in K. Mohan Iyer, Hip Joint in Adults: Advances and Developments, 2018
The lateral femoral cutaneous nerve is the nerve that provides sensation to the outer thigh surface. The compression of this nerve causes meralgia paresthetica. As the lateral femoral cutaneous nerve is a sensory nerve, the ability to use leg muscles does not get affected. In many individuals, this nerve travels through the groin to the upper thigh without any hindrance; but in meralgia paresthetica, the lateral femoral cutaneous nerve becomes pinched/compressed/trapped, usually under the inguinal ligament. Conditions that increase pressure on the groin are the common causes of this compression, such as tight clothing, excess weight/obesity, pregnancy and the presence of scar tissue near the inguinal ligament. It could be due to injury or a previous surgery or standing, walking or cycling for prolonged periods of time; and injury to the nerve can occur in a motor vehicle accident or in diabetes, causing meralgia paresthetica.
Treatment of idiopathic meralgia paresthetica – is there reliable evidence yet?
Published in Neurological Research, 2023
The compression syndrome that is associated with the lateral femoral cutaneous nerve (LCN) is called ‘meralgia paresthetica’ (Greek meros algos – pain of the thigh). Next to carpal and cubital tunnel syndrome, it is one of the most common nerve compression syndromes. Even though it was first described at the end of the 19th century by various European neurologists, there still is controversy about the aspects of treatment. So far, no randomized controlled trial exists, which compares conservative and surgical treatment options. A 2008 Cochrane analysis and its updated version, published in 2012, gives some insights into the existing body of evidence [1,2]. However, they fail to address important aspects concerning different treatment techniques and recent developments. This review article aims to give a structured overview of the existing studies in terms of epidemiology, anatomy, diagnostics, and clinical management. It aims for a critical appraisal of the existing studies, for presentation of recent developments and for a depiction of its consequences in clinical patient management.
Surgical anesthesia for revision total hip arthroplasty with quadratus lumborum and fascia iliaca block
Published in Baylor University Medical Center Proceedings, 2019
Johanna Blair de Haan, Nadia Hernandez, Sophie Dean, Sudipta Sen
Surgical blocks have been described as the primary anesthetic for fragility hip fracture.1 FI blocks have been used in the past to provide analgesia after hip fracture surgeries and hip arthroplasties.5,6 Ruzbarsky et al performed FI block for cephalomedullary nails, but the surgeon needed to infiltrate with extra local anesthesia for the insertion point.1 Due to the need for extra local anesthesia in this anesthetic technique, we decided to perform our FI block in the suprainguinal region to more reliably cover the lateral femoral cutaneous nerve in addition to the femoral nerve.7 Johnston et al reported performing femoral nerve plus lateral femoral cutaneous nerve blocks in addition to sedation with propofol and alfentanil for either dynamic hip screws or hip hemiarthroplasties.2 They had a failure rate of 7.2% with this technique, requiring conversion to general anesthesia.8
Surgical options for meralgia paresthetica: long-term outcomes in 13 cases
Published in British Journal of Neurosurgery, 2019
Zeki Serdar Ataizi, Kemal Ertilav, Serdar Ercan
Meralgia paresthetica (MP) is an entrapment neuropathy of the lateral femoral cutaneous nerve (LFCN). It causes burning, coldness, pain, tingling, sensory loss, or local hair loss in the distribution of the lateral femoral cutaneous nerve. Meralgia paresthetica, also known as Bernhardt-Roth, was first described by Hager in 1885.1 The LFNC arises from the L2 and L3 spinal nerve roots. It travels downward lateral to the psoas muscle and then crosses the iliacus muscle. It divides into the anterior and posterior branches by entering the thigh below, through or above the inguinal ligament. Its anterior branch penetrates to the fascia lata approximately 10 cm inferior to the anterior superior iliac spine (ASIS) and carries sensation from the anterior and lateral sides of the thigh. The smaller posterior branch innervates the skin of the lateral aspect of the leg from the greater trochanter to the mid-thigh.2–5