Lumbar plexopathy occurs when there is a damage to nerves arising from L1 to L4.


Some of the nerves arising from the lumbar plexus:

(1) ilohypogastric

(2) ilioinguinal

(3) lateral cutaneous nerve of the thigh

(4) genitofemoral

(5) femoral

(6) obturator

(7) lumbosacral trunk


Clinical features of lumbar plexopathy:

(1) weakness of

(1a) hip flexion

(1b) hip adduction

(1c) knee extension

(2) sensory loss over the anteromedial thigh

(3) loss of the knee reflex


Accurate diagnosis of the plexopathy requires neuroimaging and electromyography.


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