lower limb nerves Flashcards
which nerve supplies muscles in the anterior thigh compartment?
femoral nerve
except psoas major - anterior rami of L1-L3
which nerve supplies muscles in the posterior thigh compartment?
all tibial nerve
except short head of biceps femoris - common fibular nerve
which nerve supplies muscles in the medial thigh compartment?
obturator nerve
except hamstring part of adductor magnus - tibial nerve
which nerve supplies the muscles in the gluteal region?
superior and inferior gluteal muscle
nerve supply to the muscles in the anterior leg compartment?
deep fibular nerve
nerve supply to the muscles in the lateral leg compartment?
superficial fibular nerve
nerve supply to the muscles in the posterior leg compartment?
tibial nerve
except short head of biceps femoris* - common fibular nerve
which gluteal muscle is innervated by the inferior gluteal nerve?
gluteus maximus - the main hip extensor
which gluteal muscle(s) are innervated by the superior gluteal nerve?
gluteus medius
gluteus minimus
tensor fascia lata
damage to which nerve results in a trendellenberg gait?
superior gluteal nerve
what muscles are in the anterior thigh compartment?
thigh flexors: iliacus, psoas major*, sartorius, pectineus
leg extensors: quadriceps (vastus lateralis/int/medialis, rectus femoris)
where do the quadriceps muscles insert?
tibial tuberosity
name the muscles in the medial compartment of the thigh?
gracilis obturator internus adductor brevis adductor longus adductor magnus *
name the muscles in the posterior thigh compartment?
hamstrings (flex the knee/extend the hip)
- semimembranosus
-semitendinosus
biceps femoris (long head and short head*)
nb: all tibial nerve except short head biceps femoris - common fibular nerve.
what is the difference between biceps femoris and rectus femoris?
biceps femoris - hamsting (posterior thigh)
rectus femoris - quadricep (anterior thigh)
name the muscles in the lateral leg compartment?
fibularis longus and fibularis brevis
- both superficial fibular nerve
- evert and weakly plantar flex foot
name the muscles in the anterior leg compartment?
tibialis anterior
extensor hallucis longus
extensor digitorum longus
fibularis tertius
name the muscles in the posterior thigh
superficial/plantar flex ankle: soleus, plantaris, gastrocnemius
deep/ plantar flex ankle & extend toes:
- popliteus
- tibialis posterior
- extensor hallucis longus
- extensor digitorum longus
damage to which nerve results in foot drop?
common fibular (peroneal) nerve - may be due to tight cast/neck of fibula #
name the superficial gluteal muscles?
gluteus maximus
gluteus medius
gluteus minimus
tensor fascia late
name the deep gluteal muscles?
piriformis
gemelli
obturator internus
quadratus femoris
name the borders of the popliteal fossa?
superiolateral: semimembranosus
superiomedial: biceps femoris
inferiolateral/inferiomedial: gastrocnemius
roof:
floor:
a person is having trouble climbing stairs/standing from sitting. which nerve is likely damaged?
inferior gluteal nerve - innervates gluteus maximus the main hip extensor/lateral rotator
name the borders of the femoral triangle?
medial: adductor longus
lateral: sartorius
superior: inguinal ligament
contents of the femoral triangle from lateral to medial?
N femoral nerve
A femoral artery
V femoral vein
E empty space (important for vessel dilation)
L lymphatic canal deep inguinal lymph nodes
note: femoral sheath encloses the nerve, artery and empty space only.
is the femoral nerve in the femoral sheath?
NO
