Trunk and Pelvis Muscle Review Flashcards
Muscle: Main function is back extension
Erector Spinae
Muscle: Provides power when lifting and compresses the spine
Erector Spinae
Muscle: Deep fibers prevent anterior translation during flexion
Erector Spinae
Muscle: Can cause an anterior tilt of the pelvis due to its connection to the thoracolumbar fascia
Erector Spinae
Muscle: Main function is proprioception and feedback
Interspinalis
Intertransversaris
Muscle: Deep segmental muscles
Interspinalis
Intertransversaris
Muscle: Small and close to the axis of motion making them unable to produce power
Interspinalis
Intertransversaris
Muscle: “Fine tune” segmental motion
Interspinalis
Intertransversaris
Muscle: Primary function is side flexion
Quadratus Lumborum
Muscle: Function to stabilize sustained posture and heavy lifitng and is important in lumbopelvic motion
Quadratus Lumborum
Muscle: Provides a stable base for the diaphragm
Quadratus Lumborum
Muscle: Controls flexion and anterior shear forces
Multifidus
Muscle: Important for segmental stability by preventing anterior shearing
Multifidus
Muscle: Christmas tree shaped and largest (in diameter) in the lumbosacral area
Multifidus
Muscle: Primary hip/trunk flexor
Iliopsoas
Muscle: Deepest abdominal muscle that acts like a corset
Transverse Abdominis
Muscle: Important for stability and acts in a anticipatory manner (stabilizing prior to limb and trunk movement)
Transverse Abdominis
Muscle: Prevents anterior shearing due to its attachment to the thoracolumbar fascia
Transverse Abdominis