Muscle
Extensor digiti minimi
Extends the little finger
High-yield
Independent extensor of the 5th digit; posterior interosseous nerve.
Overview
A slender extensor that independently extends the little finger, supplied by the posterior interosseous nerve.
Reference facts
- Origin
Lateral epicondyle of the humerus (common extensor origin)
- Insertion
Extensor expansion of the little finger
- Action
Extends the little finger at the MCP and IP joints
- Innervation
Posterior interosseous nerve (C7, C8)
- Blood supply
Posterior interosseous artery