Anteromedial Hip & Thigh Flashcards
only quadriceps muscle to cross the hip joint
rectus femoris
where do the hamstrings attach to the pelvis?
ischial tuberosity
major parts of the pelvis
ilium ischium pubis sacrum coccyx acetabulum
superficial fascia of the thigh
tela subcutanea
superficial fascia of the thigh (tela subcutanea) is continuous with:
inferior anterolateral abdominal wall and buttock
dense, thick layer of connective tissue between subcutaneous tissue and muscles
deep fascia of the thigh - fascia lata
forms fibrous septa that separate muscles and also surrounds them
fascia lata
conjoint aponeurosis of tensor of fascia lata and gluteus maximus
iliotibial tract
what innervates the iliacus
Femoral nerve – L2, L3
what innervates the psoas major
ventral rami of L1, L2, L3
what innervates the sartorius
Femoral nerve – L2, L3
what innervates the rectus femoris
Femoral nerve – L2, L3, L4
what innervates the quadriceps muscles
Femoral nerve – L2, L3
which muscles make up the quadriceps
rectus femoris
vastus lateralis
vastus intermedius
vastus medialis
what innervates the articularis genu
femoral nerve - L2, L3
attachments of the iliacus
Origin: Iliac fossa
Insertion: Lesser trochanter
attachments of the psoas major
Origin: Transverse processes of L1-L5, sides of T12-L5 and discs between them
Insertion: Lesser trochanter
attachments of the sartorius
Origin: ASIS
Insertion: tibia
attachments of the rectus femoris
Origin: Straight head – AIIS; reflected head – ilium just superior to acetabulum
Insertion: base of patella and by ligament to tibial tuberosity
attachments of the vastus lateralis
Origin: greater trochanter, lateral lip of linea aspera
Insertion: most into lateral patella and quadriceps tendon; some pass laterally to patella as lateral retinaculum
attachments of the vastus intermedius
Origin: femoral shaft, lateral intermuscular septum
Insertion: quadriceps tendon to patella
attachments of the vastus medialis
Origin: Intertrochanteric line & medial lip of linea aspera of femur
Insertion: most into medial patella and quad tendon; some passes medial to patella as medial retinaculum
actions of the iliacus
Flex thigh at hip
Can influence posture of pelvis in weight bearing
Weak external rotation/abduction of hip
actions of the psoas major
Flex thigh at hip
Weak hip abductor/external rotator
Can have influence on posture of pelvis in weight bearing
actions of the sartorius
Flexes, abducts, and laterally (externally) rotates thigh at hip
Flexes leg at knee joint
*Not a prime mover – assists
actions of the quadriceps muscles
extend leg at knee
rectus femoris is also a weak hip flexor
helps keep patella from tracking laterally
vastus medialis
function of articularis genu
pulls on synovial capsule to prevent pinching of synovium during knee extension
attachments of the pectineus
Origin: Superior ramus of pubis
Insertion: Pectineal line of femur, just inferior to lesser trochanter
innervation of pectineus
femoral nerve - L2, L3
action of pectineus
Adduct and flex thigh
Assist with medial rotation
attachments of adductor longus
Origin: Body of pubis inferior to iliac crest
Insertion: Middle 1/3 of linear aspera of femur
innervation of adductor longus
obturator nerve, anterior division - L2, L3, L4
action of adductor longus
adduct, flex, and internally rotate thigh
attachments of adductor brevis
Origin: Body and inferior ramus of pubis
Insertion: Pectineal line and proximal part of linea aspera of femur
innervation of adductor brevis
obturator nerve, anterior division - L2, L3, L4
action of adductor brevis
adduct thigh
some thigh flexion
attachments of adductor part of adductor magnus
Origin: Inferior ramus of pubis, ramus of ischium
Insertion: Gluteal tuberosity, linea aspera, medial supracondylar line
innervation of adductor part of adductor magnus
Obturator nerve, posterior division – L2, L3, L4
actions of adductor part of adductor magnus
adduct, flex, and internally rotate thigh at hip
attachments of hamstrings part of adductor magnus
Origin: Ischial tuberosity
Insertion: Adductor tubercle of femur
innervation of hamstrings part of adductor magnus
Tibial part of sciatic nerve – L4
action of hamstrings part of adductor magnus
extend thigh
action of adductor + hamstrings parts of adductor magnus
adduct thigh
attachments of gracilis
Origin: Body of inferior ramus of pubis
Insertion: Superior part of medial surface of tibia
innervation of gracilis
Obturator nerve, anterior division – L2, L3
action of gracilis
Adduct thigh
Flex leg
Help rotate leg medially
attachments of obturator externus
Origin: Margins of obturator foramen and obturator membrane
Insertion: Trochanteric fossa of femur
innervation of obturator externus
Obturator nerve, posterior division – L3, L4
actions of obturator externus
Laterally (externally) rotate thigh
Steady head of femur in acetabulum
cutaneous nerve that innervates the skin over the medial femoral triangle
ilioinguinal nerve
cutaneous nerve that innervates the skin of the middle part of medial thigh
obturator nerve (cutaneous branch)
cutaneous nerve that innervates the skin over the distal half of the medial thigh (medial group)
anterior femoral cutaneous branches
the obturator artery is a branch of:
internal iliac artery
deep femoral artery is a branch of:
femoral artery
contents of femoral triangle
femoral artery femoral vein femoral nerve deep femoral artery deep femoral vein inguinal lymph nodes
contents of the femoral sheath
lateral to medial:
femoral artery
femoral vein
space that is femoral canal
contents of the adductor canal (subsartorial)
femoral artery
femoral vein
saphenous nerves
nerve to vastus medialis
artery that goes to the head of the femur
acetabular branch of lateral circumflex femoral artery
nerve most likely to be damaged with a posterior hip dislocation
sciatic nerve
what nerve and artery are most likely to be damaged with a posterior knee dislocation
popliteal artery
tibial nerve
fascia that separates compartments of the thigh
intermuscular septum
parts of the ilium
body ASIS crest/tubercle PSIS gluteal lines iliac fossa auricular surface
parts of the ischium
body ramus greater sciatic notch ischial spine lesser sciatic notch ischial tuberosity
parts of the pubis
body pubic pubic crest pubic tubercles superior ramus inferior ramus obturator foramen
parts of the sacrum
sacral canal sacral foramina base pelvic surface dorsal surface - sacral crests sacral hiatus sacral cornu auricular surface
parts of the acetabulum
articular surface
acetabular notch
acetabular fossa