Download Posterior Abdominal Muscles Quadratus Lumborum O: 12th rib

Posterior Abdominal Muscles
Quadratus Lumborum
O: 12th rib & transverse processes T12L5
I: iliac fossa, posterior iliac crest
N: T12-L4
A: 1. Contracts 12th rib to iliac crest
2. extension: both sides
3. bending: one side
Blood Supply: Lumbar arteries & lumbar
branch of iliolumbar a.
Psoas Major
O: Lumbar vertebrae, transverse
processes & IVdiscs T12-L5
I: Lesser trochanter
N: Ventral Rami L1-L3
A: Flexes hip
Blood supply: Lumbar branch of
iliolumbar a.
Psoas Minor
O: T12- L1
I: Pectinate Line
N: Lumbar plexus
A: flexes lumbar vertebrae
*absent in 40%
Iliacus
O: superior 2/3 of iliac fossa, ala of
sacrum, anterior sacroiliac ligament
I: Lesser trochanter
N: Femoral L2-L4
A: flexes Hip
Blood supply: medial femoral circumflex,
iliolumbar a. (iliac branch)
Iliopsoas
Psoas Major & Iliacus
**chief flexor of the hip/thigh
iliopsoas test- indicator of appendicitis
Posterior Thigh
Biceps Femoris – Long Head
*hamstring muscle
O: Ischial Tuberosity & Sacrotuberus
ligament (distal)
I: Head of Fibula
N: Tibial Div. of Sciatica N (L5-S2)
A: 1. Flex knee
2. Extends hip **
3. knee external rotation
Biceps Femoris- Short Head
*hamstring muscle
O: Linea Aspera (lateral)
I: Head of Fibula
N: Common Fibular div. of Sciatica N
(L5-S2)
A: 1. Flex knee
2. knee external rotation
Semitedinosus
*hamstring muscle
O: Ischial tuberosity
I: medial tibia (pes ancerinus)
N: Tibial Division of Sciatic N. (L5-S2)
A: 1. Extends Hip
2. Flexes Knee
3. internal rotation of knee
Semimembranosus
*hamstring muscle
O: ischial tuberosity
I: posterior medial condyle of tibia &
posterior capsule
N: Tibial Div. of Sciatic N. (L5-S2)
A: 1. Extends hip
2. Flexes knee
**deep to semitendinosus
** some fibers loop back to form the
oblique popliteal lig. (aids posterior
stability of the knee)
Adductor Magnus *hamstrings *
O: Inferior pubic ramus, ischial ramus,
ischial tuberosity
I: Medial Epicondyle femur
N: Tibial Div of Sciatic N. (L4)
A: 1. ADDucts hip
2. extends hip **
Popliteus
O: Lateral Condyle femur
I: Posteriomedial tibia
N: tibial (L4- S1)
A: 1. Dynamic stabilizer of knee with
knee internal rotation
2. Assists with flexion
Plantaris
O Lateral condyle of femur & oblique
popliteal ligament
I: medial aspect of Achilles tendon
N: Tibial N. (L4-S1)
A: 1. Dynamic stabilizer of knee with
knee internal rotation
2. Assists with flexion
Flash worksheet- Foot
Extensor Digitorum Brevis (dorsum)
O: dorsal anterior calcaneous
I: extensor digitorum longus tendons &
toes 2,3,4 ( EDL tendons)
N: Lateral Branch of deep fibular
(peroneal) N.
A: 1. Extend MTP joints for toes 2,3,4
Blood supply: dorsalis pedis a.
Extensor Hallucis Brevis (dorsum)
O: Dorsal anterior calcaneous
I: Base of proximal phalanx of Great toe
N. Lateral branch of deep fibular
(peroneal) N.
A: Extends Great toe
Blood supply: dorsalis pedis a.
ABductor Hallucis (first layer)
plantar
O: calcaneus and plantar aponeurosis
I: proximal phalanx of great toe
N: Medial Plantar N. ( S2, S3)
A: ABducts great toe
Blood supply: Medial plantar a.
Flexor Digitorum Brevis (first layer)
plantar
O: Calcaneus and plantar aponeurosis
I: proximal phalanx of toes 2-4
N: Medial Plantar N. ( S2, S3)
A: Flex Toes
Blood Supply: Deep Dorsal a.- plantar
metatarsal aa.
Abductor Digiti Minimi (first layer)
Plantar
O: Calcaneous and plantar aponeurosis
I : Proximal phalanx 5th toe
N: Lateral Plantar N. – superficial
branch (S2, S3)
A: ABduct 5th toe
Blood Supply: Lateral Plantar a.
Quadratus Plantae (second layer)
Plantar
O: Calcaneous
I: posteriolateral margin of tendon of
FLD
N: Lateral Plantar N. (S2, S3)
A: Assists flexor digitorum longus
(straightens its torque vectors)
Blood Supply: Lateral Plantar a.
Lumbricals (second layer)
Plantar
O: FDL tendons
I: dorsal hood, lateral 4 digits
N: Medial: Medial plantar N. (S2, S3)
Lateral 3: Superficial branch of
Lateral Plantar N. (S2, S3)
A: 1. Flex MTP
Blood supply: medial and lateral
plantar a.
Flexor Hallucis Brevis (third layer)
Plantar
2 Heads
O: Cuboid, lateral cuneiform and
posterior tibialis tendon
I: proximal phalanx of great toe
N: Medial Plantar N. (S2, S3)
A: Flexes great toe
Blood Supply: Medial plantar a
Adductor Hallucis (third layer)
Plantar
2 heads!
O: Oblique head: from base of 2nd, 3rd,
& 4th Metatarsals & sheath of peroneus
longus
Transverse head: from joint
capsules of 3rd, 4th, & 5th MTP’s and
deep transverse MT ligaments
I: both insert together as a tendon onto
the lateral aspect of the proximal
phalanx of the great toe
N: Lateral Plantar N.
Blood Supply: Lateral plantar a.
Flexor Digiti Minimi (third layer)
Plantar
O: 5th Metatarsal
I: proximal phalanx of 5th toe
N: lateral plantar N. ( superficial
branch) (S2, S3)
A: Little toe MTP flexion
Blood Supply: lateral plantar a.
Dorsal Interosseous m. (fourth layer)
Dorsum/plantar
O: adjacent sides of metatarsals 1-5
I: 1st: medial side of proximal phalanx
of 2nd metetarsal
2-4: lateral side of proximal
phanalges 2-4
N: Lateral Plantar N. (terminal branch
of tibial n. )
A: ABduct & flex metatarspohalangeal
joints 2-4
Blood Supply: Deep plantar a. & dorsal
plantar a.
** DAB
Plantar interosseous m. (fourth layer)
plantar
O: Medial Metetarsals 3, 4, 5
I: Medial Proximal phalanges 3, 4, 5
N: Lateral Plantar N.
A: ADDucts metatarspohalangleal
joints 3-5
Blood Supply: Deep plantar a.
** PAD
Gluteal Region Muscles
Gluteus Maximus
O: ilium, dorsal sacrum, coccyx &
sacrotuberous ligament
I: ITB & gluteal tuberosity
N: inferior gluteal n (L5, S1, S2)
A: 1. extends & laterally rotates
hip
2. ABducts hip
3. inferior fibers can ADDuct
hip
Gluteus Medius
O: Ilium
I: Greater trochanter
N: Superior Gluteal (L5, S1)
A: 1. Open chain- ABducts hip
2. closed chain- stabilizes
pelvis
3. anterior fibers- flexion and
internal rotation
4. posterior fibers- extension
and external rotation
Gluteus Minimus
O: Ilium
I: anterior border of Greater
Trochanter
N: superior Gluteal n. (L5, S1)
A: 1. ABduction
2. Medial/internal rotation
3. Weakly assists with hip
flexion
Piriformis
O: Anterior surface of sacrum &
sacrotoberous ligament
I: Superior Border of Greater
Trochanter
N: Nerve to Piriformis- ventral
rami S1, S2
A: 1. Laterally rotates & Extends
Hip
2. Assists in ABduction (when
hip is flexed)
Obturator Internus
O: Pelvic Surface Obturator
membrane & Ischium
I: Medial Surface of Greater
Trochanter
N: Nerve to Obturator internus
(L5-S1)
A: 1. Laterally rotates hip
2. assists with ABduction
(when hip is flexed!! )
Superior Gemellus
O: ischial spine
I: medial surface of greater
trochanter
N: nerve to obturator internus
(L5-S1)
A: 1. Laterally rotates hip
2. assists with ABduction
(when hip is flexed!)
Inferior Gemellus
O: ischial tuberosity
I: medial surface of Greater
Trochater
N: Nerve to Quadratus Femoris
(L5-S1)
A: 1. Laterally rotates hip
2. Assists with ABduction
(when hip is flexed!!)
Quadratus Femoris
O: Lateral border of Ischial
tuberosity
I: Intertrochanteric Crest
N: Quadratus Femoris N. (L5- S1)
A: Laterally rotates hip
Obturator Externus
*medial thigh m. *
O: rami of pubis & ischium &
external surface of Obturator
membrane
I: trochanteric fossa of femur
N: Obturator N (L3-4)
A: 1. Lateral/external rotator of
the thigh
2. ADDucts hip
Flash Worksheet - Leg
Anterior Compartment
Ankle Dorsiflexors & Toe Extensors
Tibialis Anterior
O: lateral tibial condyle & ½ lateral
surface of tibia
I: medial cuneiform & base of 1st
metatarsal
N: Deep Fibular (Peroneal) N. (L4-S1)
A: 1. Ankle dorsiflexion
2. Foot inversion (powerful)
Blood Supply: Anterior Tibial a.
Extensor Hallucis Longus
O: Middle ½ anterior surface of fibula &
interosseous membrane
I: base of distal phalanx
N: Deep Fibular (Peroneal) N. (L4-S1)
A: 1. Great toe extension
2. Ankle dorsiflexion
Blood supply: Tibial a.
Extensor Digitorum Longus
O: lateral tibial condyle & ¾ of media
lsurface of fibula & interosseous
membrane
I: middle phalanx of lateral 4 toes
N: Deep Fibular (Peroneal) N. (L4-S1)
A: 1. PIP Extension of lateral 4 toes
2. Ankle Dorsiflexion
Blood Supply: Tibial a.
Fibularis (Peroneus) Teritus
O: Inferior 1/3 anterior surface of fibula
I: dorsal shaft of 5th metatarsal
N: Deep Fibular (Peroneal) N. (L4-S1)
A: 1. Ankle dorsiflexion
2. foot eversion
Blood Supply: tibial a.
*may be absent, very small m.
Lateral Compartment
Ankle Plantarflexors & Foot Evertors
Fibularis (Peroneus) Longus
O: Fibular head and lateral surface of
fibula
I: base of 1st metatarsal * medial
cuneiform
N: Superficial Fibular (Peroneal) N. (L5S2)
A: 1. Subtalar eversion
2. Weak ankle plantarfleion
Blood Supply: fibular a.
Fibularis (Peroneus) Brevis
O: distal lateral surface of fibula
I: base of 5th Metatarsal
N: Superficial Fibular (Peroneal) N. (L5S1)
A: 1. Subtalar eversion
2. Weak ankle plantarflexion
Blood Supply: fibular a.
Posterior Compartment
Ankle Plantarflexors & Toe Flexors
Gastrocnemius (Superficial)
*2 heads
O: femoral condyles (medial & lateral)
I: calcaneal tuberosity (Achilles tendon)
N: Tibial N. (S1, S2)
A: 1. Plantar Flex ankle
2. Flex knee
Blood Supply: sural a.
Soleus (Superficial)
O: Posterior tibia & fibula
I: Calcaneal Tuberosity (Achilles tendon)
N: Tibial N. (S1, S2)
A: 1. Stablilizes knee indirectly by
stabilizing tibia
2. Ankle plantar flexion
Blood Supply: sural a.
Plantaris (Superficial)
O: Lateral Supracondylar line of femur &
oblique popliteal ligament
I: Calcaneal Tuberosity (Achilles tendon)
N: Tibial N. (L5, S1)
A: Dynamic stabilizer of the knee
Blood Supply: sural a.
Tibialis Posterior (Deep)
O: Interosseous Membrane & Posterior
tibia & Fibula
I: Navicular tuberosity & fibrous
expansion of cuneiforms, cuboid and
bases of 2nd, 3rd, & 4th metatarsals
N: Tibial N. (L4, L5, S1)
A: 1. Plantar flexes foot
2. Foot inversion
3. Eccentricly controls against
dorsiflexion and eversion/pronation
Blood Supply: posterior tibial a.
Flexor Digitorum Longus (Deep)
O: Tibia an posterior tibialis muscle
fascia
I: distal phalanges of lateral 4 toes
N: Tibial N. (L5, S1, S2)
A: 1. Ankle, MTP & IP flexion
2. Foot inversion
Blood Supply: posterior tibial a.
Flexor Hallucis Longus (Deep)
O: Distal 2/3 of posterior fibula
I: base of distal phalanx of great toe
N: Tibial N. (L5, S1, S2)
A: 1. MTP and Hallux IP joint flexion
2. Ankle plantarflexion
3. Foot inversion
Blood Supply: posterior tibial a.
Popliteus (Deep)
O: lateral Femoral condyle
I: tibia’s soleal line (posteriomedial tibia)
N: Tibial N. (L4-S1)
A: 1. Dynamic knee stabilizer
2. Assists with knee flexion
3. Internal (medial) rotator of tibia on
femur
Blood Supply: popliteal a.
Anterior and Medial Thigh Muscles
Anterior Thigh
Tensor Fasciae Latae m.
O: Iliac crest and ASIS
I: ITBand
N: superior Gluteal N. (L4-S1)
A: 1. Hip flexion
2. hip ABduction
3. Hip internal/medial rotation
4. Helps stabilize knee in extension
Blood Supply: Superior gluteal a. &
lateral circumflex femoral
Sartorius m.
O: ASIS
I: Medial Tibia (pes ancerinus)
N: Femoral N. (L2, L3)
A: 1. Hip flexion
2. Hip ABduction
3. Hip external rotation
4. Knee flexion
Blood Supply: femoral a.
Rectus Femoris (Quadriceps femoris m)
O: 1. AIIs
2. superior rim of acetabulum
I: Tibial tuberosity (Patellar tendon)
N: femoral N. (L2,34)
A: 1. Extends knee
2. Flexes hip
Blood Supply: femoral & lateral
circumflex femoral a.
Vastus Lateralis (Quadriceps femoris m)
O: Greater trochanter & lateral lip of
linea aspera
I: Tibial tuberosity (Patellar tendon)
N: Femoral N (L2,3,4)
A: Extends knee
Blood Supply: femoral a.
Vastus Intermedius (Quadriceps femoris)
O: Anterior & lateral Femur
I: Tibial tuberosity
N: Femoral N. (L2,3,4)
A: Extends Knee
Blood Supply: femoral a.
** lies deep to Vastus Rectus!
Vastus Medialis (Quadriceps femoris m)
O: intertrochanteric line & medial lip of
linea aspera
I: Tibial tuberosity
N: Femoral N (L2,3,4)
A: Extends Knee
Blood Supply: femoral a.
Medial Thigh Muscles
Pectineus (Superficial)
O: Superior Ramus of Pubis
I: femur just inferior to lesser trochanter
N: femoral N. & sometimes obturator
(L2,3,4)
A: 1. Flexes hip
2. ADDucts hip
Blood Supply: profunda femoral &
medial femoral circumflex a.
*forms floor of femoral triangle with
iliopsoas m.
Adductor Longus (Superficial)
O: Pubis- Inferior to Pubic crest
I: linea aspera (middle 1/3)
N: Obturator N. (L2,3,4)
A: 1. ADDucts hip
2. assists with hip extension, flexion
and rotation
Blood Supply: profunda femoral &
medial femoral circumflex a.
Gracilis (Superficial)
O: Body and Inferior Ramus of Pubis
I: Superior medial tibia (pes ancerinus)
& satorius & semitendinosis
N: Obturator n. (L2, L3)
A: 1. ADDucts hip
2. Flexes & interally rotates knee
Blood supply: profunda femoral &
medial femoral circumflex a.
Adductor Brevis (Deep)
O:Pubis- Body and Inferior ramus
I: Proximal Linea Aspera
N: Obturator N. (L2,3,4)
A: 1. ADDucts hip
2. Assists with hip flexion and
rotation
Blood Supply: profunda femoral &
medial femoral circumflex a.
Adductor Magnus (Deep portion)
O: inferior pubic ramus, ischial ramus,
ischial tuberosity
I: Linea aspira
N: Obturator N.
A: Adducts hip
Blood Supply: profunda femoral &
medial femoral circumflex a.
Adductor Magnus (upper, minimus)
O: inferior pubic ramus, ischial ramus,
ischial tuberosity
I: linea aspira
N: obturator
A: 1. Adducts hip
2. Externally rotates hip
Blood supply: profunda femoral &
medial femoral circumflex a.
** note other adductor magnus on
posterior thigh worksheet
All have the same ORIGIN.
Changes: insertions, innervations and
actions!!!
Gluteal Muscles
Gluteus Maximus
Origin
Ilium, dorsal
sacrum, coccyx and
sacrotuberous
ligament
Insertion
Iliotibial band and
Gluteal tuberosity
Gluteus Medius
Origin
Ilium
Insertion
Greater trochanter
Gluteus Minimus
Origin
Ilium
Insertion
Anterior border of
greater trochanter
Innervation
Inferior Gluteal n.
(L5, S1, S2)
Blood Supply
Superior and
inferior gluteal
arteries
Innervation
Superior gluteal n.
(L5, S1)
Blood Supply
Superior gluteal
artery
Innervation
Superior gluteal n.
(L5, S1)
Blood Supply
Superior gluteal
artery
Actions
-Extends hip
-Laterally rotates
hip
-Abducts hip
-Adducts hip (most
inferior fibers)
Actions
-Abducts hip in an
open chain
-Stabilizes pelvis in
a closed chain
-Flexion of hip
-Medial rotation of
hip
-Extension of hip
-Lateral rotation of
hip
**Trendelenburg
Gait
-indicative of a
weak gluteus
medius
Actions
-Abducts the hip
-Medially rotates
the hip
-(Flexes the hip)
Lateral Rotators of the Hip
Piriformis
Origin
Anterior surface
of sacrum,
sacrotuberous
ligament
Insertion
Superior border
of the greater
trochanter
Superior Gemellus
Origin
Ischial spine
Insertion
Medial surface of
greater
trochanter
Innervation
Nerve to the
piriformis
(ventral rami
S1, S2)
Actions
-Laterally
rotates the hip
-Extends the
hip
-Abducts the
Blood Supply hip when hip is
Sup. and Inf.
flexed
gluteal
arteries,
**Landmark
lateral sacral
for
arteries
neurovascular
structures
Innervation
Nerve to
Obturator
Internus (L5,
S1)
Blood Supply
Inferior
gluteal artery
Actions
-Laterally
rotate the hip
-Abduct the hip
when the hip is
flexed
Inferior Gemellus
Origin
Ischial tuberosity
Insertion
Medial surface of
greater
trochanter
Obturator Internus
Origin
Obturator
membrane and
ischium
Insertion
Medial surface of
greater
trochanter
Quadratus Femoris
Origin
Lateral border of
ischial tuberosity
Insertion
Intertrochanteric
crest
Origin
Innervation
Nerve to
Quadratus
Femoris (L5,
S1)
Actions
-Laterally
rotate the hip
-Abduct the hip
when the hip is
flexed
Blood Supply
Inferior
gluteal artery
Innervation
Nerve to
Obturator
Internus (L5,
S1)
Actions
-Laterally
rotates the hip
-Abducts the
hip when the
hip is flexed
Blood Supply
Superior
gluteal artery
Innervation
Nerve to
Quadratus
Femoris (L5,
S1)
Actions
-Laterally
rotates the hip
Blood Supply
Inferior
gluteal artery
Innervation
Actions
Obturator Externus
Rami of pubis and
ischium, external
surface of
obturator
membrane
Obturator n.
(L3, L4)
-Laterally
rotates the hip
-(Adducts the
Blood Supply hip)
Obturator a.
Insertion
Trochanteric
fossa
Posterior Thigh Muscles
Biceps Femoris
(Long)
Origin
Ischial tuberosity
and distal
sacrotuberous
ligament
Insertion
Head of fibula
Biceps Femoris
(Short)
Origin
Lateral portion of
linea aspera
Insertion
Head of fibula
Innervation
Tibial division of
Sciatic n. (L5-S2)
Blood Supply
Inferior gluteal a.
Perforating
arteries
Popliteal a.
Innervation
Common Fibular
division of Sciatic
n. (L5-S2)
Blood Supply
Inferior gluteal a.
Perforating
arteries
Popliteal a.
Actions
-Flex the knee
-Extends the hip
-Knee external
rotation
Actions
-Flex the knee
-Knee external
rotation
Semitendinosus
Origin
Ischial tuberosity
Insertion
Medial tibia
Semimembranosus
Origin
Ischial tuberosity
Insertion
Post. med. condyle
of tibia and
posterior capsule
Adductor Magnus
Origin
Inferior public
ramus, ischial
ramus, ischial
Innervation
Tibial division of
Sciatic n. (L5-S2)
Blood Supply
Inferior gluteal a.
Perforating
arteries
Actions
-Extends the hip
-Flex the knee
-Knee interal
rotation
Innervation
Tibial division of
Sciatic n. (L5-S2)
Actions
-Extends the hip
-Flex the knee
Blood Supply
Profunda femoris
a.
**Some fibers
loop back to form
Oblique Popliteal
Ligament
Innervation
Tibial division of
Sciatic n. (L4)
Actions
-Adducts the hip
-Extends the hip
tuberosity
Blood Supply
Obturator a.
Insertion
Medial epicondyle
of the femur
Popliteus
Origin
Lateral condyle of
the femur
Insertion
Posteriomedial
tibia
Innervation
Tibial n. (L4-S1)
Blood Supply
Popliteal a.
Actions
-Stabilizer of knee
during internal
knee rotation
-Flex the knee
Anterior Thigh Muscles
Tensor Fascia Latae
Origin
Iliac crest and
ASIS
Insertion
Iliotibial Band
Innervation
Actions
Superior gluteal -Flex the hip
n. (L4-S1)
-Abduct the
hip
Blood Supply
-Medially
Lateral
rotate the hip
circumflex
-Stabilize
femoral a.
knee in
Superior gluteal extension
a.
Sartorius
Origin
ASIS
Insertion
Medial tibia
Iliopsoas
Origin
Psoas: IV discs of
T12-L5
And TVP
Iliacus: Iliac crest,
iliac fossa, ala of
sacrum, SI
ligament
Innervation
Femoral n.
(L2,L3)
Blood Supply
Femoral a.
Innervation
Anterior rami
of L1-L3
Blood Supply
Medial femoral
circumflex a.
Iliolumbar a.
Actions
-Flex the hip
-Abduct the
hip
-Laterally
rotate the hip
-Flex the knee
Actions
-Flex the hip
-(Laterally
rotates the
hip)
Insertion
Lessor trochanter
Rectus Femoris
(Quadriceps Femoris)
Origin
Two heads: AIIS
and superior rim
Innervation
Femoral n. (L2L4)
Actions
-Extend the
knee
of acetabulum
Insertion
Tibial tuberosity
Blood Supply
Lateral femoral
circumflex a.
-Flex the hip
Vastus Lateralis
(Quadriceps Femoris)
Origin
Innervation
Greater trochanter Femoral n. (L2and lateral lip of
L4)
linea aspera
Blood Supply
Insertion
Femoral a.
Tibial tuberosity
Actions
-Extend the
knee
Vastus Intermedius
(Quadriceps Femoris)
Origin
Ant. and Lat.
femur
Innervation
Femoral n. (L2L4)
Actions
-Extend the
knee
Insertion
Tibial tuberosity
Blood Supply
Femoral a.
Origin
Intertrochanteric
line and medial lip
Innervation
Femoral n. (L2L4)
Vastus Medialis
(Quadriceps Femoris)
Actions
-Extend the
knee
of linea aspera
Insertion
Tibial tuberosity
Blood Supply
Femoral a.
Medial Thigh Muscles
Pectineus
Origin
Superior ramus of
pubis
Insertion
Inferior to lesser
trochanter
Adductor Longus
Adductor Brevis
Innervation
Femoral n.
(Obturator n. {L2L4})
Actions
-Flex the hip
-Adducts the hip
Blood Supply
Profunda femoral
a.
Medial femoral
circumflex a.
Origin
Pubis, inferior to
pubic crest
Innervation
Obturator n. (L2L4)
Insertion
Linea aspera (mid
1/3)
Blood Supply
Profunda femoral
a.
Medial femoral
circumflex a.
Origin
Pubis, body and
Innervation
Obturator n. (L2-
Actions
-Adducts hip
-(Extends the hip)
-(Flexes the hip)
-(Rotates the hip)
Actions
-Adducts the hip
Gracilis
**Obturator
Externus and
Adductor Magnus
are included in the
above sections, but
are still located in
the medial thigh
region
inf. ramus
L4)
Insertion
Prox. linea aspera
Blood Supply
Profunda femoral
a.
Medial femoral
circumflex a.
Origin
Body and inf.
ramus of pubis
Innervation
Obturator n. (L2L3)
Insertion
Superior med.
tibia
Blood Supply
Profunda femoral
a.
Medial femoral
circumflex a.
-(Flex the hip)
-(Rotates the hip)
Actions
-Adducts the hip
-Flexes the hip
-Medially rotates
the hip