Functional Rehab Academy
Supinator
Muscle origin
Lateral epicondyle of humerus, radial collateral ligament, annular ligament, supinator crest of ulna
Muscle insertion
Lateral, posterior, and anterior surfaces of proximal third of radius
Muscle function
Supination of forearm and control of elbow and upper and lower Radioulnar joints.
Nerve innervation
C7-C8 (Lovett reactor T10-T11)
Primary muscle type
Phasic / Mixed type (50-60%)
Myofascial lines
Primary inhibatory muscles
- Trapezius upper
- Deltoid anterior & posterior
- Biceps brachii
- Pronator teres
Related joints
- Elbow joint
- Radioulnar joint
Ulnar part
Client is supine with the elbow at a 110 deg. flexion and full supination. Grab around the wrist and apply pressure towards pronation – trying to twist the forearm and palm of the hand around.
Radial part
Client is supine with the elbow at a 45 deg. flexion and full supination. Grab around the wrist and apply pressure towards pronation – trying to twist the forearm and palm of the hand around.
Functional anatomy for
Supinator
Organ relationship: (T5-L2, Sacrum, n. Vagus)
- Stomach (AK)
- Symp – T5-9 (Celiac plexus)
- Parasymp – CX (Vagus)
- Liver (AK)
- Symp T5-10 (Celiac plexus)
- Parasymp – CX (Vagus)
- Reproductive organs (AK)
- Symp – T10-L2 (Inferior Hypogastric, Ovarian and Testicular plexus)
- Parasymp – S2-4 (Sacral plexus)
Associated muscles
- Biceps brachii – Supination of forearm and control of elbow and Radioulnar joints
- Brachioradialis – control of elbow and Radioulnar joints
- Triceps brachii medial part – Supination of forearm through fascial pull
- Trapezius – Superficial back arm line
- Deltoid – Superficial back arm line
- Pronator teres – Control of elbow and Radioulnar joints
- Pronator quadratus – Control of Radioulnar joints
- Flexor carpi ulnaris/radialis – Control of elbow and Radioulnar joints
- Extensor carpi ulnaris/radialis – Control of elbow and Radioulnar joints