Psoas major

Definition

The psoas major is a long fusiform (spindle-shaped) muscle that connects the lumbar vertebrae to the femur. It plays a crucial role in flexing the hip joint and stabilizing the lower back.

Related terms

Lumbar Vertebrae:

The five vertebrae located between the thoracic vertebrae and sacral vertebrae in the lower back that provide support and stability to the spinal column.

Femur:

The longest and strongest bone in the human body, forming the thigh and connecting at its upper end with the pelvis (hip bone) and at its lower end with the knee.

Hip Flexion: A movement that decreases the angle between the femur and pelvic girdle by drawing them closer together, primarily facilitated by muscles including the psoas major