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The lateral cutaneous nerve of the thigh (also called the lateral femoral cutaneous nerve) is a cutaneous nerve of the thigh. It originates from the dorsal divisions of the second and third lumbar nerves from the lumbar plexus. It passes under the inguinal ligament to reach the thigh.
The nerve involved is the lateral femoral cutaneous nerve (LFCN). [6] [7] [4] [8] The symptoms are purely sensory because the LFCN has no motor function. [4] This syndrome can be caused by anything which places prolonged pressure on the LFCN, such as wearing a tight belt.
The superior cluneal nerves, middle cluneal nerves, posterior femoral cutaneous nerve, lateral femoral cutaneous nerve are all sensory and resection may simply be a more "complete" option, as nerve decompressions can't explore every part of the nerve and may miss some entrapment points. Outcomes for nerve resection is similar to nerve ...
The intermediate cutaneous nerve (middle cutaneous nerve) pierces the fascia lata (and generally the sartorius) about 7.5 cm below the inguinal ligament, and divides into two branches which descend in immediate proximity along the forepart of the thigh, to supply the skin as low as the front of the knee.
Sometimes compression occurs in areas that are not considered tunnels and where a nerve passes between two mechanically stiffer tissue types that can squeeze or pinch the soft nerve. Examples include the lateral femoral cutaneous nerve at the inguinal ligament [8] and the middle cluneal nerves at the long posterior sacroiliac ligament. [9]
Cutaneous innervation of the lower limbs is the nerve supply to areas of the skin of the lower limbs (including the feet) which are supplied by specific cutaneous nerves. Modern texts are in agreement about which areas of the skin are served by which nerves , but there are minor variations in some of the details.
For this reason, a nerve resection may be considered after a failed decompression. Examples of nerves that may be good candidates for resection are lateral femoral cutaneous nerve, [42] zygomaticotemporal branch of the trigeminal nerve, [43] the posterior femoral cutaneous nerve, [44] [45] and the middle/superior cluneal nerves. [46]
Those with femoral nerve dysfunction may present problems of difficulties in movement and a loss of sensation. [medical citation needed] The patient, in terms of motor skills, may have problems such as quadriceps wasting, loss of knee extension and a lesser extent of hip flexion given the femoral nerve involvement of the iliacus and pectineus muscles. [3]