THE LOWER LIMB Flashcards
attachments of gluteus maximus
iliac crest, sacrum, sacrotuberous ligament, coccyx proximally and iliotibial tract distally
action of gluteus maximus
extensor of the hip
attachments of gluteus medius and minimus
external/posterior/gluteal aspect of the ilium and anterolateral aspect of the greate trochanter of the femur
action of gluteus medius/minimus
abduction and medialy rotation of the thigh
nerve supply to gluteus medius/minimus
superior gluteal nerve (L5, S1, S2)
damage to gluteal muscles or their nerve supply can cause
trendelenberg gait
nerve supply to gluteus maximus
inferior gluteal nerve (L5, S1, S2)
deep muscles of the gluteal region
piriformis, gemelli, obturator internus, quadratus femoris
attachments of the deep gluteal muscles
between the sacrum, ilium and ischial spine and tuberosity medially and the greater trochanter of the femur laterally
action of the deep gluteal muscles
external roataion of the thigh, and stability of the hip joint
what is the iliotibial tract and where does it run?
a thickening of the fascia lata, running from the ASIS to the lateral aspect of the lateral tibial condyle
purpose of the iliotibial tract
support the knee joint
what/where is the tensor fasciae latae
the muscular part of the fascia lata, enclosed in the proximal posrtion of the tract
which spinal roots make up the sciatic nerve?
L4-S3
name the branches of the sciatic nerve
tibial and common fibular
which nerve roots make up the pudendal nerve ?
S2-S4
what does the pudendal nerve innervate
muscles, skin and fascia of much of the perineum
what nerve roots make up the posterior cutaneous nerve of the thigh
S1-S3
what does the posterior cutaneous nerve of the thigh innervate
the skin over the posterior aspect of the thigh
what type of nerve fibres does the posterior cutaneous nerve of thigh contain
sensory and sympathetic nerve fibres
borders of the femoral triangle
superiorly - inguinal ligament medially - adductor longus laterally - sartorius floor - pectineus medially, iliopsoas laterally roof - deep fascia
contents of the femoral triangle
from lateral to medial - femoral nerve, artery, vein, lymph nodes
contents of the femoral sheath
femoral artery and vein
what is the femoral sheath made of
a short tube of tranversalis and iliopsoas fascia
which nerve roots form the femoral nerve
L2-L4
where does the saphenous nerve branch from
femoral nerve
where does the saphenous nerve branch from the femoral nerve
leaves the adductor canal to pass between sartorius and gracilis
what does the saphenous nerve supply
anteromedial aspects of the knee and leg and medial aspect of the foot
what are the contents of the femoral canal
deep inguinal lymph nodes and adipose tissue
what do the medial and lateral circumflex femoral arteries supply
the head of the femur
where do the circumflex femoral arteries arise from
profunda femoris
the inguinal ligament is made up of the
inferior border of the external oblique aponeurosis
muscles of the anterior thigh
iliopsoas, sartorius, quadriceps femoris (rectus femoris, vastuc medius and lateralis, and vastus intermedius)
proximal attachments of iliopsoas
iliac fossa and lumbar transverse processes/IV discs
distal attachments of iliopsoas
lesser trochanter of femur
action of iliopsoas
flexion at the hip
nerve supply of iliopsoas
anterior rami of lumber spinal nerves
proximal attachments of sartorius
ASIS
distal attachments of sartorius
medial surface of proximal tibia
action of sartorius
flexion at the hip and knee
nerve supply of sartorius
femoral nerve
proximal attachment of rectus femoris
ASIS
distal attachemtns of rectus femoris
patella (via quadriceps tendon) then tibial tuberosity (via patellar tendon)
action of the quadriceps femoris
extension of the knee
nerve supply of quadriceps femoris
femoral nerve
proximal attachment of vastus muscles (quads)
shaft of femur
distal attachments of vastus muscles (quads)
patella (via quadriceps tendon) then tibial tuberosity (via patellar tendon)
muscles of the medial thigh
gracilis, adductors brevis, longus and magnus
which muscle contains a hamstring part and an adductor part
adductor magnus
where is gracilis located
most medially
which hamstring crosses the knee
gracilis
which adductor lies most posteriorly
adductor magnus
which adductor lies most superiorly
adductor brevis
proximal attachments of the adductors
pubis, ischiopubic ramus, or ischial tuberosity (hamstring part of a. magnus)
distal attachments of the adductors
posterior surface of the shaft of the femur along the linea aspera, or adductor tubercle of the tibia (adductor part of a. magnus)
nerve supply to the adductors
obturator (L2-L4), except for the hamstring part of a. magnus - tibial nerve
sensory innervation of the thigh
anterior cutaneous nerve of the thigh (branch of femoral nerve - L2-L4), lateral cutaneous nerve of the thigh (branch of the lumboscaral plexus - L2-L3), cutaneous branch of the obturator nerve (L2-L4)
lymph following the great saphenous vein drains into the
superficial inguinal lymph nodes
lymph from the superficial inguinal nodes drains into the
external iliac nodes
lymph following the small saphenous vein drains into the
popliteal nodes
lymph from the popliteal nodes drains into the
deep inguinal nodes
the deep inguinal nodes drain into the
external iliac nodes