Anatomy of the Digiti Minimi

Question 1

Flexor Digiti Minimi (Brevis)

Answer 1

O: Hook of the hamate and flexor retinaculum

I: Base of the proximal phalange (ulnar side)

A: Flexion of the 5th finger

N: Ulnar

Question 2

Extensor Digiti Minimi

Answer 2

O: Lateral Epicondyle

I: Extensor hood of the 5th finger

A: Extension of the MP, PIP, and DIP of the 5th finger

N: Radial

Question 3

Abductor Digiti Minimi

Answer 3

O: Flexor carpi ulnaris and pisiform

I: Base of the proximal 5th phalange (ulnar side), and ulnar border of the extensor hood

A: Abudction of the 5th finger; Assists with MP flexion

N: Ulnar

Question 4

Opponens Digiti Minimi

Answer 4

O: Hook of the hamate and flexor retinaculum

I: Entire length of the 5th metacarpal

A: Opposition of the 5th MCP joint

N: Ulnar