
Flexor Digitorum Superficialis
Radial head: oblique line of the radius along its supero-anterior border
Primary Actions of the Flexor Digitorum Superficialis:
1. Flexion of the digits at the proximal interphalangeal joints
- Agonists: Flexor Digitorum Profundus
- Antagonists: Lumbricals, Dorsal Interossei, Palmar Interossei, Extensor Digitorum, Extensor Indicis, Extensor Digiti Minimi
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Secondary Actions of the Flexor Digitorum Superficialis:
2. Assists with flexion of the digits at the metacarpophalangeal joints
- Agonists: Dorsal Interossei, Palmar Interossei, Lumbricals, Flexor Digitorum Profundus, Flexor Digiti Minimi
- Antagonists: Extensor Digitorum, Extensor Indicis, Extensor Digiti Minimi
3. Assists with flexion of the wrist
- Agonists: Flexor Carpi Radialis, Palmaris Longus, Flexor Carpi Ulnaris
- Antagonists: Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis, Extensor Carpi Ulnaris
For pain and symptom information see: Flexor Digitorum Superficialis Pain and Symptoms