lumbar plexus nerves Flashcards
motor supply of iliohypogastric nerve
internal oblique and transverse abdominis
cutaneous supply of iliohypogastric nerve
skin covering proximal lateral aspect of buttocks
iliohypogastric nerve is anterior or posterior division?
anterior division of the spinal nerves
cutaneous supply of ilioinguinal nerve
proximal medial aspect of thigh
where does the ilioinguinal nerve come off of?
anterior division of L1
which nerve enters the thigh by passing beneath the inguinal ligament just medial to the ASIS
lateral femoral cutaneous nerve of the thigh
where does the lateral femoral cutaneous nerve come off of? anterior or posterior
posterior division of the spinal nerves
cutaneous supply of lateral femoral cutaneous nerve
lateral aspect of the thigh (both anterior and posterior)
compression neuropathy of the lateral femoral cutaneous nerve as it leaves the pelvic cavity is called?
meralgia paresthesia
symptoms of meralgia paresthesia include?
pain, burning and tingling along lateral aspect of thigh
meralgia paresthesia is often confused with what?
hip disorders like trochanteric bursitis
which nerve pierces the psoas major muscle and runs inferiorly on the anterior aspect of the muscle? also divides into 2 branches
genitofemoral nerve- has a femoral and genital branch
motor supply of genitofemoral nerve
cremaster muscle
cutaneous supply of genitofemoral nerve
genitalia and small area below inguinal ligament
the genitofemoral nerve is anterior or posterior division?
the anterior division of spinal nerves
the femoral nerve is anterior or posterior division?
the posterior division of spinal nerves
motor supply of femoral nerve
iliacus, psoas major, sartorius, quadriceps, pectineus
cutaneous supply of femoral nerve
medial and intermediate aspect of anterior thigh and medial leg and foot
the femoral nerve gives off articular branches to supply what?
hip and knee joints
what is the name of the cutaneous branch off the femoral nerve which supplies the medial leg and foot?
saphenous nerve
motor damage to the femoral nerve causes:
leg can’t be extended and flexion at hip is diminished (iliopsoas)
sensory damage to the femoral nerve causes:
medial and intermediate anterior aspect of the thigh and medial leg and foot
compression of the saphenous nerve may occur where?
within the adductor canal or where it exits the fascia to supply the medial leg
entrapment neuropathy of the saphenous nerve can cause what?
knee pain and paresthesia along the distribution of the nerve
the obturator nerve is anterior or posterior?
anterior division of spinal nerve
motor supply of obturator nerve
pectineus, adductor magnus, adductor longus and brevis, gracilis and obturator externus
cutaneous supply of obturator nerve
skin on the medial aspect of thigh
articular supply of obturator nerve
hip and knee joints
the accessory obturator nerve is found in what percentage of the population?
20%, when found is just lateral to obturator
accessory obturator nerve supplies what when present?
pectineus muscle and hip joint
damage to the obturator nerve happens when?
during a difficult childbirth or anterior dislocation of the hip
how do you test for damage to the obturator nerve?
adduction of the femur against resistance