2.01b Gluteal Region Posterior Lower Extremities

Gluteal Region
and
Posterior Lower
Extremities
Bautista, Domasian, Magno, Reyes
Gluteal
Region
I. Pictures with label
II. OINA
III. Additional info
Tinanong sa group 1 to
Cadaver of
Group 1
Cadaver of
Group 2
Gluteal Region
1. Gluteus maximus
2. Sciatic nerve
3. Gluteus medius
4. Gluteus minimus
5. Piriformis
6. Gemellus superior
7. Obturator internus
8. Gemellus inferior
9. Quadratus Femoris
10. Superior gluteal vein
11. Inferior gluteal vein
GLUTEAL MUSCLES
Muscle
Gluteus
maximus
Origin
Insertion
Nerve Supply
Action
Outer surface of
ilium, sacrum,
coccyx,
sacrotuberous
ligament
Outer surface of
ilium
Iliotibial tract and

gluteal tuberosity
of femur
Inferior gluteal
nerve
Roots: L5; S1,2
Extends and laterally

rotates hip joint;
extends knee joint
through iliotibial tract
Lateral surface of
greater trochanter
Superior gluteal
nerve
Roots: L5; S1
Outer surface of
ilium
Anterior surface of
greater trochanter
Superior gluteal
nerve
Roots: L5; S1
Iliac crest
Iliotibial tract
Superior gluteal
nerve
Roots: L4, 5
Abducts thigh at hip

joint; tilts pelvis when
walking to permit
opposite leg to clear
ground
Abducts thigh at hip
joint; tilts pelvis when
walking to permit
opposite leg to clear
ground
Assists gluteus
maximus in extending
knee joint
Gluteus medius
Gluteus
minimus
Tensor fasciae
latae
LATERAL ROTATOR MUSCLES

Muscle
Origin
Piriformis
Anterior surface Upper border of

of sacrum
greater trochanter
of femur
Ischial spine
Upper border of
greater trochanter
of femur
Inner surface of Upper border of
obturator
greater trochanter
membrane
of femur
Ischial
Upper border of
tuberosity
greater trochanter
of femur
Outer surface of Medial surface of
obturator
greater trochanter
membrane and
pubic and ischial
rami
Lateral border of Quadrate tubercle
ischial tuberosity of femur
Gemellus
superior
Obturator
internus
Gemellus
inferior
Obturator
externus
Quadratus
femoris
Insertion
Nerve Supply
Action
S1, 2
Lateral rotator of thigh at

hip joint
hip joint
Sacral plexus
Roots: L5; S1

hip joint; abducts thigh

hip joint
Obturator
nerve
Roots: L3, 4
Laterally rotates thigh at

hip joint; adducts thigh
Sacral plexus
Roots: L5; S1

hip joint; adducts thigh
L1-3;
S1-3
L1, T2
L1, L3
S1-S3
Posterior
Thigh
I. Pictures with label
II. OINA
III. Additional info
blue pin - Tensor Fasciae Latae
orange pins - Vastus Lateralis
Cadaver of group 1
Cadaver of group 1
Cadaver of group 2
Cadaver of group 2
Posterior Thigh
1. Semimembranosus
2. Semitendinosus
3. Long head of Biceps femoris
4. Short head of Biceps femoris
5. Gracilis
6. Sciatic trunk
7. Popliteal vein
8. Common peroneal nerve
9. Tibial nerve
10.Iliotibial tract
POSTERIOR THIGH MUSCLES

Muscle
Biceps femoris
Semitendinous
Origin
Long head: ischial
tuberosity
Short head: linea

aspera, lateral
supracondylar
ridge of shaft of
femur
Ischial tuberosity
Semimembranosus Ischial tuberosity
Adductor magnus
(hamstring
portion)
Ischial tuberosity
Insertion
Head of
fibula
Nerve Supply
Long head: tibial
portion of sciatic
nerve
Roots: L5; S1, 2
Action
Flexes and laterally
rotates leg at knee
joint; long head also
extends thigh at hip
joint
Short head:
common peroneal
portion of sciatic
nerve
Upper part
of medial
surface of
shaft of tibia
Medial
condyle of
tibia
Tibial portion of
sciatic nerve
Roots: L5; S1, 2
Adductor
tubercle of
femur
Tibial portion of
sciatic nerve
Roots: L2,3,4
TIbial portion of
sciatic nerve
Roots: L5; S1, 2
Flexes and medially

rotates leg at knee
joint; extends thigh at
hip joint
Flexes and medially
rotates leg at knee
joint; extends thigh at
hip joint
Extends thigh at hip
joint
Posterior Leg
and
Sole of the Foot
*All the muscles of the posterior leg are supplied by

the tibial nerve, and they plantar-flex the foot.
Medial head of the
gastrocnemius
Lateral head of the

gastrocnemius
Short saphenous
vein
Soleus
Peroneus longus
Peroneus longus
Peroneus brevis
Soleus
Lateral head of the
gastrocnemius
Medial head of the
gastrocnemius
Sural nerve
Tendo calcaneusc
Tibial nerve
Long saphenous
vein
Medial head of the
gastrocnemius
Tendo calcaneus
Flexor digiti minimi

Plantar aponeurosis
Right posterior leg
Right posterior leg

with nerves and
veins
Sole of the left foot

2.01b Gluteal Region Posterior Lower Extremities

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2.01b Gluteal Region Posterior Lower Extremities

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Gluteal Region

Iliotibial tract and

Extends and laterally

Abducts thigh at hip

LATERAL ROTATOR MUSCLES

Anterior surface Upper border of

Lateral rotator of thigh at

Lateral rotator of thigh at

Lateral rotator of thigh at

Laterally rotates thigh at

Lateral rotator of thigh at

blue pin - Tensor Fasciae Latae

orange pins - Vastus Lateralis

POSTERIOR THIGH MUSCLES

Short head: linea

Semimembranosus Ischial tuberosity

Flexes and medially

*All the muscles of the posterior leg are supplied by

Lateral head of the

Flexor digiti minimi

Right posterior leg

Right posterior leg

Sole of the left foot

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