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8
L A B O R A T O R Y
Thigh
MEDIAL THIGH
Identify the muscles associated with the medial compartment of the thigh.
Identify the attachment points of the medial thigh muscles.
Identify the actions of these muscles.
Identify the primary innervation source for the anterior compartment muscles.
Identify the primary vascularization source for the anterior compartment muscles.
Identify the great saphenous vein as the superficial venous drainage for the lower extremity.
Medial Thigh
Muscle
Adductor
Longus
Origin
Body of Pubis
Insertion
Innervation
Blood Supply
Action
Mid-linea aspera Obturator N
of Femur
(L2-L4)
Obturator A
Adduct thigh at
Femoral A
hip
Deep A of Thigh
Adductor Brevis Body, Inferior
ramus of Pubis
Pectineal line,
Linea aspera
of Femur
Obturator N
(L2-L4)
Obturator A
Adduct, flex
Femoral A
thigh at hip
Deep A of Thigh
Adductor
Magnus
Adduct:
Pubic ramus,
Ischial ramus
H-string:
Ischial tuberosity
Adduct: gluteal
tuberosity, linea
aspera of Femur
H-string:
adductor tubercle
of Femur
Adduct:
Obturator N
(L2-L4)
H-String:
Sciatic N
Tibial div. (L4)
Obturator A
Femoral A
Deep A of Thigh
(profunda
femoris)
Adduct thigh at
hip
Adduct:
flex thigh
H-string:
extend thigh
Gracilis
Body, Inferior
ramus of Pubis
Superomedial
Tibia
Obturator N
(L2-L3)
Obturator A
Circumflex
Femoral A
Adduct thigh
Flex, M-rotate
thigh
Obturator
Externus
Pubic Obturator Trochanteric
membrane
fossa of Femur
(outside)
Obturator N
(L3-L4)
Obturator A
Circumflex
Femoral A
Steady head of
Femur &
L-rotate thigh
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Laboratory 8 • Thigh
POSTERIOR THIGH
Identify the previously discussed bony landmarks of the femur.
Identify the muscles associated with the posterior compartment of the thigh.
Identify the attachment points and actions of the posterior thigh muscles.
Identify the primary source of innervation of the posterior compartment muscles of the thigh.
Identify the primary arterial blood supply to the posterior compartment.
Posterior Thigh
Muscle
Origin
Insertion
Innervation
Blood Supply
Action
Semitendinosis
Ischial
tuberosity
Superomedial
Tibia
Sciatic N
Tibial Div
(L5-S2)
Deep A of Thigh Extend thigh,
(profunda
Flex leg,
femoris)
M-rotate thigh
Semimembranosis
Ischial
tuberosity
Superomedial
Tibia
Sciatic N
Tibial Div
(L5-S2)
Deep A of Thigh Extend thigh,
(profunda
Flex leg,
femoris)
M-rotate thigh
Biceps Femoris
Long: Ischial
tuberosity
Short:
Linea Aspera
Lateral
supracondylar
line of Femur
Lateral Fibular
head
Long: Sciatic N
Tibial Div
(L5-S2)
Short: Sciatic N
Comm Fibular
Div. (L5-S2)
Deep A of
Thigh
(profunda
femoris)
Flex leg,
L-rotate thigh,
extend thigh
ANTERIOR THIGH
Identify the muscles associated with the anterior compartment of the thigh.
Identify the attachment points of the anterior thigh muscles.
Identify the actions of these muscles.
Identify the primary innervation source for the anterior compartment muscles.
Identify the primary vascularization source for the anterior compartment muscles.
Describe the boundaries and contents of the femoral triangle.
Describe the contents of the femoral sheath.
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Laboratory 8 • Thigh
Anterior Thigh
Muscle
Origin
Insertion
Innervation
Blood Supply
Action
Iliopsoas
Psoas Major
T12-L5 bodies,
transverse
processes
Lesser trochanter Ventral rami
of Femur
L2-L4
Lumbar A
External Iliac A
Flex thigh &
Stabilize hip
Iliacus
Iliac crest/fossa,
Sacrum,
Sacroiliac
Ligament
Lesser trochanter Femoral N
of Femur
(L2-L3)
Lumbar A
External Iliac A
Flex thigh &
Stabilize hip
Psoas Minor
T12-L1 bodies
Intervertebral
disc
Body of Pubis
Ventral rami
L2-L4
Lumbar A
Anterior flex
Abdomen
Pectineus
Superior ramus
of Pubis
Pectineal line of
Femur
Femoral N
(L2-L3)
Obturator A
Circumflex A
Flex &
Adduct thigh
Sartorius*
Anterior
Superior
Iliac spine
Superomedial
Tibia
Femoral N
(L2-L3)
Femoral A
Flex, abduct,
and L-rotate
thigh at hip;
Flex leg at knee
Rectus Femoris
Ant Inf Iliac
spine
Ilium - superior
to acetabulum
Base of Patella
Femoral N
Tibial tuberosity
(L2-L4)
Femoral A
Deep A of Thigh
(profunda
femoris)
Extend leg at
knee,
Flex thigh,
Steady hip
Vastus Lateralis
Greater
trochanter &
Lateral linea
aspera of Femur
Intertrochanteric
line & medial
linea aspera of
Femur
Base of Patella
Femoral N
Tibial tuberosity
(L2-L4)
Femoral A
Deep A of Thigh
(profunda
femoris)
Femoral A
Deep A of Thigh
(profunda
femoris)
Extend leg at
knee
Anterolateral
Femur
Base of Patella
Femoral N
Tibial tuberosity
(L2-L4)
Quadriceps
Femoris
Vastus Medialis
Vastus
Intermedius**
Base of Patella
Femoral N
Tibial tuberosity
(L2-L4)
Extend leg at
knee
Femoral A
Extend leg at
Deep A of Thigh knee
(profunda
femoris)
* Sartorius – named after tailors – sitting crossed-legged or “Indian-style.”
** Articularis genu is part of vastus intermedius and moves the patellar bursa.
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