Flexor Digitorum Superficialis
Origin: Ulnar head: medial epicondyle of the humerus via the common flexor tendon, medial border of the base of the coronoid process of the ulna, and ulnar collateral ligament
Radial head: oblique line of the radius along its supero-anterior border
Radial head: oblique line of the radius along its supero-anterior border
Insertion: Volar surface of the base of each middle phalanx of the four digits
Actions: Flexion of the digits, Flexion of the wrist
Innervation: Median nerve (C7, C8, T1)
Blood Supply: Muscular branches from the ulnar and radial arteries
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
An excellent book for those beginning the study of anatomy. Coloring helps memory retention.
For intermediary anatomy students learning skeletal and muscle structure.
For beginning and intermediary anatomy . Muscle overlays on the human body. Excellent visuals!