Spinales
Region
📷 Spinalis by Uwe Gille, via Wikimedia Commons, in the Public domain
Origin & Insertion
['Origin: Spinous processes of lower thoracic and upper lumbar vertebrae', 'Insertion: Spinous processes of upper thoracic vertebrae']
Synergistic Muscles
['Longissimus', 'Iliocostalis']
Joints
['Spinal intervertebral joints']
Primary Actions
['Extends vertebral column']
Nerve & Spinal Segment
Dorsal rami of spinal nerves
Segmental innervation; cervical to lumbar
Interesting
Most medial column of erector spinae group. [Gray’s Anatomy]
Reversal of Action
Lift pelvis toward trunk in bridging
Common Dysfunctions
Poor posture, spinal stiffness, low endurance
How to Stretch
Child’s pose with flexion emphasis.
Trigger Points
How to Strengthen
Superman holds, back extensions.
Concentric Action
Extend vertebral column
Applications:
Postural endurance and spinal control in aging adults
Eccentric Action
Lower spine from extended posture
Isotonic Action
Back extension exercises
Related Conditions
['Facet joint irritation', 'Postural dysfunction']
Isometric Action
Hold spine in upright/extended position
Exercise Ideas
['Prone extensions', 'Bird-dog', 'Stability ball back lifts']
Related Blogs
Images
- 1Page 1