MUSCLES THAT ACT ON EACH DIGIT: Digit 5 (Pinky)

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Abductor Digti Minimi

Abducts the little finger at the MCP joint

Palmar Interossei

Adducts fingers 2,4,5 at the MCP joints towards hand midline

Extensor Digitorum

Extends fingers 2-5 at MCP joint and assists with extension at PIP and DIP

Extensor Digiti Minimi

Extends the little finger at the MCP

Extensor Mechanism

Extensor Digitorum cross the MCP Joint and insert into extensor hood of the 2nd through 5th digit

Flexor Digitorum Profundus

Flexes fingers 2-5 at the DIP joints

Flexor Digitorum Superficialis

Flexes fingers 2-5 at the MCP and PIP joint

Lumbericals

Flexes fingers 2-5 at the MCP joints and extends the IP joints

Flexor Digiti Minimi

Flexes the little finger at the MCP joint

Opponens Digiti Minimi

Opposes the little finger at the CMC joint

MUSCLES THAT ACT ON EACH DIGIT: Digit 5 (Pinky)-

● Lumbricals ● Flexor Digiti Minimi ● Flexor Digitorum Superficialis ● Flexor Digitorum Profundus ● Extensor Digitorum ● Extensor Digiti Minimi ● Abductor Digti Minimi ● Palmar Interossei ● Opponens Digiti Minimi ● Extensor Mechanism


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