Spry Juncture, LLC
How to Evolve Gracefully
Pronator Teres
Region
Origin & Insertion
['Origin: Medial epicondyle of humerus and coronoid process of ulna', 'Insertion: Lateral surface of radius']
Synergistic Muscles
['Pronator quadratus', 'Flexor carpi radialis']
Joints
['Elbow', 'Proximal radioulnar joint']
Primary Actions
['Forearm pronation', 'Weak elbow flexion']
Nerve & Spinal Segment
Median nerve
Brachial plexus; C6–C7
Interesting
Forms medial boundary of cubital fossa. [Netter’s]
Reversal of Action
Stabilize hand while turning upper arm medially
Common Dysfunctions
Weak pronation, median nerve entrapment
How to Stretch
Supinate forearm while extending elbow.
Trigger Points
How to Strengthen
Resisted pronation drills.
Concentric Action
Turn palm downward (pronation)
Applications:
Restores forearm control in functional tasks like writing or tool use
Eccentric Action
Control return to supination
Isotonic Action
Resisted forearm pronation with band or dumbbell
Related Conditions
['Median nerve compression', 'Forearm fatigue']
Isometric Action
Hold forearm in mid-pronated position against resistance
Exercise Ideas
['Pronating dumbbell twist', 'Band pronation', 'Wrist roller']