Flexor Digitorum Superficialis
Musculus flexor digitorum superficialis
Flexor digitorum superficialis is the largest superficial muscle of the anterior forearm and the primary flexor of the middle finger joints (PIP joints) of digits two through five. It is central to gripping strength and is heavily loaded by deadlifts, pull-ups, farmer’s carries, and any sustained grip work. Its tendons split to allow the deeper profundus tendons to pass through on the way to the fingertips.
- Actions
- Flexion of the proximal interphalangeal joints of digits 2-5, Assists flexion of the metacarpophalangeal joints, Assists wrist flexion
- Origin
- Humeroulnar head from the medial epicondyle (common flexor tendon) and coronoid process of the ulna; radial head from the anterior oblique line of the radius
- Insertion
- Sides of the middle phalanges of the second to fifth digits
- Innervation
- Median nerve (C7-C8, T1)
- Blood supply
- Ulnar and radial arteries
- Heads
- Humeroulnar head, Radial head
Antagonists Extensor Digitorum
Exercises (9)
Trains as a primary mover
- Barbell Wrist Curl
- Behind-the-Back Wrist Curl
- Cable Wrist Curl
- Dumbbell Farmers Carry
- Dumbbell Wrist Curl
- Farmers Carry
- Trap-Bar Farmers Carry
- Wrist Curl
Assists in