Psoas major

This tutorial covers the Sois major muscle, part of the iliopsoas muscle group, detailing its origin, insertion, innervation, and function. The Sois major originates from the lumbar vertebrae and inserts at the femur's lesser trochanter. It unifies with the iliacus muscle to form the iliopsoas, passing below the inguinal ligament. Innervated by the lumbar plexus, it is the strongest hip flexor, crucial for walking and upper body straightening. The video concludes with a call to explore more resources on Kenhub.

What are the origin points of the Sois major muscle?

Describe the innervation of the Sois major muscle.

What is the function of the iliopsoas muscle during physical activities?

What role does the iliopsoas muscle play in hip joint movement?

Explain how the Sois major muscle contributes to the stabilization of the pelvis.