thigh Flashcards
compartments of the lower limb
anterior: knee extensors, hip flexors
medial: hip adductors/flexors
posterior: knee flexors, hip extensors
contents of femoral sheath
Femoral…
Nerve
Artery
Vein
Empty space
Lymph nodes
IT band insertion
gerdy’s tubercle
IT band function
keeps femur from moving on tibia when flexed
femoral triangle contents
femoral sheath
apex of femoral triangle leads to…
adductor canal
adductor canal contents
entering: femoral A, V saphenous N
exiting: popliteal A,V, saphenous branch of femoral N and A
popliteal fossa contents (4)
femoral A (becomes popliteal, then branches into post and ant tibial A)
sciatic N (branches into tibial and common fib N)
short saphenous V
popliteal lymph nodes
sartorius
tailors muscle,
ASIS–>ant med tib
flexes, abducts, laterally rotates hip
flexes, internally rotates (when flexed) knee
femoral n
TFL
strengthens IT band
begins hip flexion
laterally rotates hip
superior gluteal n
quads
powerful knee extensors, come together to form the quadriceps tendon which attaches superiorly to patella femoral n. 1. rectus femoris: 2 heads, AIIS, ant capsule of hip joint, also flexes hip ONLY ONE THAT CROSSES HIP JOINT 2. vastus lateralis 3. vastus medialis 4. vastus intermedius
vastus medialis obliquus
distal portion of vastus medialis
active during terminal knee ext
prevents patella from tracking laterally
articularis genu
small muscle, often part of the vastus intermedius protects synovial membrane during knee ext
pectineus
pubis–>post femur
starts hip flexion
2 nerve innervation!!: femoral and obturator
iliopsoas
combo of iliacus and psoas major
most powerful hip flexor
only ones that can flex hip from a seated position
lumbar lordosis, ant pelvic tilt
L1&L2 ventral rami
anterior thigh muscles (5)
sartorious
TFL
quads
pectineus
iliopsoas
medial comp thigh muscles (5)
pectineus
adductor longus
adductor brevis
adductor magnus
gracilis
flex and adduct hip, assist in internal rot obturator nerve
adductor magnus
can also extend hip
dual innervation–> 2 portions
- anterior/adductor portion: obturator n
- post/hamstring portion: extends hip, sciatic n
gracilis
2 joint muscle
most medial medial comp muscle
flexes & adducts hip
flexes knee
inwardly rot tibia on femur with knee flexed
femoral cut n
lateral thigh
femoral n
cut: skin on ant and med thigh
motor: quads, sartorius, half of the pectineus
muscles in post comp
hamstrings
hamstrings
biceps femoris: long head inserts on ischial tub, short on linea aspera, both connect to the head of the fib semimembranosus
semitendonosus
sciatic n
pes anserinus
sartorius
gracilis
semitendonosus
all insert onto the ant med tib and flex the knee
also inwardly rot when knee is flexed
ant comp innerv
femoral, lat femoral cut
med comp innerv
obturator
post comp innerv
sciatic:
lateral/common fib: short head of biceps femoris only
tibial portion: all other hamstrings
post femoral cut: to skin in post comp
blood supply to ant comp
sup femoral A. —> deep femoral
blood supply to med comp
obturator A —>med and lat femoral Cx
blood supply to post comp
deep femoral A
osgood schlatus
tibial tuberosity doesnt fuse till late, gets pulled away from tibia, bone grows faster than muscle
popliteal artery
found in popliteal fossa, supplies knee joint and its capsule
innervation of quads
femoral
innervation of TFL
superior gluteal
innervation of sartorius
femoral
innervation of pectineus
DUAL: femoral and obturator
innervation of iliopsoas
L1&L2 ventral rami
adductor magnus innervation
DUAL: anterior portion: obturator post portion: sciatic
