Lower limb Flashcards
What are the spinal levels for the sciatic nerve
L4-S3
What is the largest nerve in the body
Scaitic nerve
What does the sciatic nerve innervate
Posterior thigh, all the leg and foot
NB supplies nothing in the gluteal region
What are the branches of the sciatic nerve
tibial
common fibular
Spinal levels of pudendal nerve
S2-4
what is the function of the superficial muscle group in the gluteal region
Extensors, abductors and medial rotators of hip
list muscles of superficial gluteal region
gluteus: maximus, medius, minimus and tensor fascia lata
function of deep gluteal muscles
lateral rotators of thigh and hip stabilisers
list muscles of deep gluteal region
piriformis, sup+inf gemelli, obturator internus, quadratus femoris
what is innervated by the inferior gluteal nerve
gluteus maximus
what is innervated by the superior gluteal nerve
gluteus medius, minimus + tensor fascia lata
What happens in Trendelenberg gait
the superior gluteal nerve is impaired resulting in poor function of the gluteus medius and minimus and a hip drop on the contralateral side
spinal levels of femoral nerve
L2-4
what are the borders of the femoral triangle
lateral = sartorius medial = adductor longus superiorly = inguinal ligament
contents of femoral triangle
NAVY - lateral to medial femoral nerve femoral artery femoral vein lYmphatics (deep inguinal)
innervation of anterior thigh
femoral nerve
innervation of medial thigh
obturator nerve
innervation of posterior thigh
tibial division of sciatic - semiT, semiM and long head of biceps femoris
Short head of biceps femoris = common fibular division of sciatic
what is the saphenous nerve a branch of
femoral nerve
saphenous nerve travels along the great saphenous vein
which muscle does the sciatic nerve emerge from
inferior to the piriformis
in the posterior view what are the borders of the popliteal fossa
lateral = biceps femoris medial = semiT + M inferiorly = medial and lateral heads of the gastrocnemius
what is the sural nerve
comes from the tibial and common fibular branches of the sciatic to supply skin of posterolateral leg and lateral foot
It descends with the small saphenous vein
what is foot drop
palsy of the common fibular nerve
