Uploaded January 2022 | Updated September 2026, 1 week ago

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Content
0:00 Introduction
0:25 Division of the Thigh Muscles
0:41 Anterior Group
1:00 Quadriceps Femoris
2:03 Sartorius Muscle
2:25 Medial Group: Pectineus
2:49 Adductor Brevis
3:08 Adductor Longus
3:27 Adductor Magnus
3:56 Gracilis
4:18 Posterior Group
4:37 Biceps Femoris
5:10 Semitendinosus
5:26 Semimembranosus

Muscles of the Thigh
- Anterior Group [2]
- Medial Group [5]
- Posterior Group [3]

Anterior Group [2]
- Cover the entire anterior surface of the thigh
- Common innervation: Femoral Nerve

Quadriceps Femoris
musculus quadriceps femoris
- Recus Femoris
○ O: Anterior Inferior Iliac Spine
- Vastus Lateralis
○ O: Lateral Lip of Linea Aspera
- Vastus Medialis
○ O: Medial Lip of Linea Aspera
- Vastus Intermedius
○ O: Anterior Surface of Femus
- I: Tibial Tuberosity through Patellar Ligament
- F:
Extension of the Leg
Flextion of Femur

Sartorius Muscle
musculus sartorius
- O: Anterior Superior Iliac Spine
- I: Tibial Tuberosity
Tubebrositas tibiae
F:
Flexion of Thigh and Leg
External Rotation of Thigh
Internal Rotation of Leg

Medial Group [5]:
Pectineus
musculus pectineus
- O: Pecten Pubis
- I: Pectineal line of Femur'
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Brevis
musculus adductor brevis
O: Inferior Pubic Ramus
Ramus inferior ossis pubis
I: Medial Lip of Linea Aspera
labium mediale linea aspera
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Longus
musculus adductor longus
- O: Between Pubic Symphysis and Pubic Tubercle
I: Medial Lip of Linea Aspera
labium mediale linea aspera
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Magnus
musculus adductor longus
O:
Inferior Pubic Ramus
Ischial Ramus and Ischial Tuberosity
I:
Medial Lip of Linea Aspera
Media Epicondyle of Femur
F:
Adduction + Extension of Thigh
Internal Rotation of Thigh
Gracilis
musculus gracilis
- O: Inferior Pubic Ramus
I: Tibial Tuberosity
Tubebrositas tibiae
F:
Adduction of Thigh
Flexion of Leg
Internal Rotation of Leg

Posterior Group [3]:
- Extensors of the hip joint and flexors of the knee joint
- Common innervation - Sciatic Nerve

Biceps Femoris
musculus biceps femoris
- Long Head
O: Ischial Tuberosity
tuber ischiadicum
- Short Head
○ O: Lateral Lip of Linea Aspera
I: Head of Fibula
caput fibulae
F:
Flexion of the Leg
External rotation of the Leg
Extension of the Thigh (long head)

Semitendinosus
musculus semitendinosus
O: Ischial Tuberosity
tuber ischiadicum
I: Tibial Tuberosity
tiberositas tibiae
F:
Flexion of the Leg
Internal rotation of the Leg
Extension of the Thigh

Semimembranosus
musculus semimembranosus
O: Ischial Tuberosity
tuber ischiadicum
I: Medial Condyle of Tibia
condylus medialis tibiae
F:
Flexion of the Leg
Internal rotation of the Leg
Extension of the Thigh
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