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 :

      1. Flexion of leg
      2. External rotation of leg
      3. 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

Recent Article post