Muscles of thigh region human body
Table of Contents
IntroductionΒ Β Β
The thigh region is divided into anterior, medial, and posterior groups of muscle.
Anterior group
Common innervation in the anterior group is the femoral nerve.
Quadriceps Femoris
Rectus Femoris
OriginΒ : Anterior Inferior Iliac Spine .
Vastus lateralis
OriginΒ : Lateral lip of linea aspera .
Vastus medialis
OriginΒ : Medial Lip of linea aspera.
Vastus Intermedius
Origin: Anterior Surface of femur.
Insertion: Tibial tuberosity through a patellar ligament.
Action: Extension of the leg, Flexion of femur.
Β Sartorius Muscle
Origin : Anterior superior Iliac spine
Insertion: Tibial tuberosity
Action: Flexion of thigh and leg, External rotation of the thigh, Internal rotation of the thigh
Medial group of muscleΒ
Pectineus
Origin : Pecten Pubis
Insertion: Pectineal line of femur.
Action: Adduction + Flexion of the thigh, External Rotation of thigh.
Adduction Bervis
Origin : Inferior Pubic Ramus
Insertion: Medial lip of linea Aspera
Action: Adduction + Flexion of the thigh, External Rotation of thigh.
Adductor Longus
Origin : Between Pubic Symphysis and Pubic Tubercle.
Insertion : Medial lip of linea Aspera.
Action : Adduction + Flexion of thigh, External Rotation of thigh.
Adductor Magnus
Origin :
- Inferior Pubic Ramus
- Ischial Ramus and ischial tubersoity
Insertion :
- Medial Lip of Lines Aspera.
- Medial epicondyle of the femur
Action: Adduction + Flexion of the thigh, External Rotation of thigh.
Gracillis
Origin : Inferior Pubic Ramus
Insertion: Tibial Tuberosity
Action : Adduction of thigh, leg flexion, Internal Rotation of leg.
Posterior group of muscle
They are the extensor of the hip joint and flexor of the knee joint and the common innervation is Sciatic Nerve.
Bicep Femoris
Long Head
Origin : Ischial Tuberosity
Short head
Origin : Lateral Lip of Linea Aspera
Insertion: Head of the fibula
Action :
- Flexion of leg
- External rotation of leg
- Extension of thigh
Semitendinosus
Origin: Ischial Tuberosity
Insertion: tibial tuberosity
Action :
- Flexion of the leg.
- Internal rotation of the leg
- Extension of the thigh.
Semimembranosus
It is located behind Semitendinosus
Origin : Ischial Tuberosity
Insertion: Medial condyle of Tibia
Action :
- Flexion of leg
- Internal Rotation of the leg
- Extension of the thighupper thigh muscle pain
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