Contents
Anatomy pictures
Referred pain pattern
Muscle type
- Postural
- Shortens when overactivated
Symptoms
- Difficulties with fine motoric skills requiring use of the thumb, such as writing
- Trigger thumb
Muscle attachment zones
Videos - treatment techniques
Detailed version
Anatomy
Position
- Deep
Origin
- Anterior surface of proximal radius (just distal to tuberositas radii)
- Membrana interosseus
- Processus cornoideus ulnae
- Medial eponcidylus humerus
Insertion
- Anterior surface of distal phalanx of thumb
Main function
- CMC joint
- Flexion
- MCP joint
- Flexion
- IP joint
- Flexion
- Wrist
- Flexion
Secondary function
- Wrist
- Radial deviation
- Elbow
- Flexion
Nerve innervation
- Segmental
- C7-Th1
- Peripheral
- Nervus medianus
Arterial supply
- Radial artery
- Anterior interosseus artery