lower extremity peripheral nerves Flashcards
lateral femoral cutaneous nerve root
L2-L3
lateral femoral cutaneous sensory region
lateral thigh
lateral femoral cutaneous (M,O,I,A)
sensory only but responsible for meralgia parenthetica
Anterior femoral cutaneous nerve root
L2-L4
Anterior femoral cutaneous- sensory region
anterior thigh
Anterior femoral cutaneous (M,O,I,A)
sensory only
what 2 peripheral nerves are sensory only
Anterior and lateral femoral cutaneous
Ventral Rami peripheral nerve
L1, L2
Ventral Rami sensory region
N/A
Ventral Rami muscle
psoas major
origin- Ventral Rami
Lumbar T.P.
Ventral Rami insertion
lesser trochanter
Ventral Rami action
hip flexion
Femoral nerve root
L2-L4
Femoral sensory region
cutaneous nerves of thigh
femoral-muscles
iliacus, pectinous,sartorious, and quadriceps
femoral- iliacus origin
iliac crest, iliac fossa, ala of sacrum, and ant S-I ligaments
femoral- pectinous- origin
sup ramus of pubis
femoral -sartorius- origin
ASIS
femoral- quadriceps- origin RF
AIIS and ilium sup to acetabulum
femoral- quadriceps- origin VL
Greater trochanter and line aspera
femoral- quadriceps- origin VM
intertrochanteric line and linea aspera
femoral- quadriceps- origin VI
anterior and lateral surface of femur
femoral- quadriceps- insertion
base of patella and tibial tuberosity via patellar ligament
femoral- sartorius- insertion
pes anserinus: superior part of medial surface of tibia
femoral- pectineus- insertion
pectineal line of femur
femoral- iliacus- insertion
tendon of psoas major
lesser trochanter
femoral- quadriceps- action
hip flexion (RF)/ knee extension (ALL)
femoral- sartorius- action
hip flexion. external rotation, and abduction, and knee flexion
femoral- iliacus- action
hip flexion and external rotation
femoral- pectineus- action
hip adduction
superior gluteal muscles
gluteus medius Has anterior and posterior fibers,
gluteus Minimus,
tensor fascinate latae
superior gluteal- gluteus minimus- origin
gluteal surface of ilium b/w anterior and inferior gluteal lines
superior gluteal- gluteus minimus and medius- insertion
greater trochanter
superior gluteal- gluteus minimus and medius- action
Hip ABD/IR; keeps pelvis level when opposite leg is raised *Post fibers of medius will ER hip.
AKA “Hip Rotator Cuff”
superior gluteal- tensor fascia latte- insertion
iliotibial band attaching to lateral condyle of tibia
superior gluteal- tensor fascia latte- origin
ASIS, anterior iliac crest
superior gluteal- tensor fascia latte- action
hip flexion/ abduction, internal rotation
Inferior gluteal- muscle
Gluteus Maximus
Gluteus Maximus- origin
Sacrotuberous ligament, ilium posterior to posterior line, and dorsal surface of sacrum and coccyx
Gluteus Maximus- insertion
Iliotibial tract, gluteal tuberosity
Gluteus Maximus actions
Hip extension, and external rotation
Piriformis N. -origin
Anterior surface of sacrum and sacrotuberous ligament
Piriformis insertion
Greater trochanter
Piriformis action
Hip external rotation
Quadratus femoris- origin
Ischial tuberosity
Quadratus femoris- insertion
Intertrochanteric crest
Quadratus femoris action
Hip external rotation
Sciatic nerves includes
Tibial and common perineal divisions (L4-S3)
Sciatic nerve muscles
Bicep femoris, semitendinosus, semimembranosus, and adductor magnus
Bicep femoris- LH origin
Ischial tuberosity
Bicep femoris- SH origin
Linea aspera, lateral supracondylar line
Bicep femoris- insertion
Head of fibula
Bicep femoris- action
-Hip extension and knee flexion
-Can also extend trunk when thigh and leg are flexed
LH is what nerve sciatic
Tibial nerve
SH is what nerve in the sciatic
Common perineal nerve
Semitendinosus and semi membranosus- origin
Ischial tuberosity
Semitendinosus- insertion
Pes anserine
Semimembranosus- insertion
Medial condyl of tibia
Semi tend and mem- actions
Knee flexion
Obturator nerve- sensory region
Medial thigh
Adductor brevis origin
Body and inferior ramus of pubis
Adductor longus origin
Body of pubis
Adductor brevis- insertion
Pectineal line and lines aspera
Adductor longus- insertion
Linea aspera
Adductor longus/brevis actions
Hip adduction and flexion
Gracilis- origin
Body and inferior ramus of pubis
Gracilis- insertion
Pes anserine
Gracilis actions
Hip adduction and internal rotation
Obturator externus- origin
Obturator foramen
Obturator externus- insertion
Trochanteric fossa
Obturator externus- actions
Hip external rotation
Adductor magnus- Adductor origin
Inferior ramus of pubis, ramus of ischium
Adductor magnus: hamstring- origin
Ischial tuberosity
AM: adductor- insertion
Gluteal tuberosity, Linea aspera, medial supracondylar line
AM: hamstring- insertion
Adductor tubercle of femur
AD: adductor- action
Hip adduction
AM:hamstring -action
Hip extension