Membrum Inferius: Musculos e Functios

Membrum Inferius (Lower Limb)

• Ilio-Psoas:

  • Origin: Lumbare (Lumbar) region
  • Insertion: Femur (thigh bone)
  • Function: Hip flexion

• Medium Gluteus (Middel Gluteal Muscle):

  • Origin: Pelvis
  • Insertion: Femur
  • Role: Hip Abductor (moving leg away from the body)

• Small Gluteus (Small Gluteal Muscle):

  • Origin: Pelvis
  • Insertion: Femur
  • Role: Hip Abduction and external rotation of hip

• Tensor Fascia Latae (TFL):

  • Origin: Ilium (part of the hip bone)
  • Insertion: Femur
  • Role: Hip stabilizor, also abducts and flexes the hip

• Pelvi-Trochanteric (Pelvi-Trochanteric Muscles):

  • Origin: Pelvis
  • Insertion: Femur
  • Function: External rotation of the hip

• Large Gluteus (Large Gluteal Muscle):

  • Origin: Pelvis
  • Insertion: Femur
  • Role: Hip extension

• Adductors:

  • Origin: Pubic bone
  • Insertion: Femur
  • Role: Hip adduction (moving leg towards the body) and flexion

Genu (Knee)

• Quadriceps:

  • Origin: Four heads (4) from the femur and pelvis
  • Insertion: Patella (kneecap) to tibia
  • Role: Knee extension and stabilization

• Sartorius:

  • Origin: Ilium (part of the hip bone)
  • Insertion: Proximal tibia
  • Function: Flexion and adduction of the leg at the knee

• Semitendinosus (Hamstrings):

  • Origin: Ischial tuberosity (of the pelvic bone)
  • Insertion: Proximal tibia
  • Role: Knee flexion, hip extension

• Popliteus:

  • Origin: Lateral condyle of femur
  • Insertion: Posterior surface of the tibia
  • Role: Flexion of the knee

Ankle and Foot

• Gastrocnemius:

  • Origin: Femur
  • Insertion: Achilles tendon
  • Role: Ankle plantar flexion (pointing the toes downwards) and knee flexion

• Soleus:

  • Origin: Tibia and fibula
  • Insertion: Achilles tendon
  • Role: Ankle plantar flexion

• Anterior Tibial:

  • Origin: Tibia
  • Insertion: Foot
  • Role: Ankle dorsiflexion (lifting the toes upwards)