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