Hand Muscles Actions

Flexor Carpi Radialis (FCR)

Wrist Flexion

Wrist Radial Deviation

Flexor Carpi Ulnaris (FCU)

Wrist Flexion

Wrist Ulnar Deviation

Palmaris Longus (PL)

Wrist Flexion

Extensor Carpi Radialis Longus (ECRL)

Wrist Extension

Radial Deviation

Extensor Carpi Radialis Brevis (ECRB)

Wrist Extension

Radial Deviation

Extensor Carpi Ulnaris (ECU)

Wrist Extension

Ulnar Deviation

Flexor Digitorum Superficialis (FDS)

Wrist Flexion

MCP 2-5 Flexion

PIP 2-5 Flexion

Flexor Digitorum Profundus (FDP)

MCP 2-5 Flexion

PIP 2-5 Flexion

DIP 2-5 Flexion

wrist flexion

Flexor Pollicis Longus (FPL)

CMC 1 Flexion

MCP 1 Flexion

IP 1 Flexion

wrist flexion

Extensor Digitorum

MCP 2-5 Extension

PIP 2-5 Extension

DIP 2-5 Extension

wrist extension

Extensor Digitorum Minimi

MCP 5 Extension

wrist extension

Extensor Indicis

MCP 2 Extension

MCP 2 Adduction

wrist extension

Abductor Pollicis Longus

CMC 1 Abduction & Extension

Wrist Radial Deviation

Extensor Pollicis Longus

Wrist Radial Deviation

CMC 1 Extension

MCP 1 Extension

IP 1 Extension

Extensor Pollicis Brevis

Wrist Radial Deviation

CMC 1 Extension

MCP 1 Extension

Abductor Pollicis Brevis

CMC 1 Abduction

MCP 1 Abduction

CMC 1 Opposition

Flexor Pollicis Brevis

CMC 1 Flexion & opposition

MCP 1 Flexion

Opponens Pollicis

CMC 1 opposition

Abductor Digiti Minimi

MCP V Abduction
CMC V opposition

Opponens Digiti Minimi

CMC V Opposition

Flexor Digiti Minimi

MCP 5 Flexion

CMC 5 opposition

Palmar Interossei (3)

MCP 2,4,5 Adduction

*MCP, PIP, DIP 2,4,5: assist MCP flexion w PIP & DIP extension (tabletop)*

Dorsal Interossei (4)

MCP 2, 3,4 Abduction

*MCP, PIP, DIP 2,3,4: assist MCP flexion w PIP & DIP extension (tabletop)* 

Adductor Pollicis

CMC 1 Adduction

MCP 1 Adduction & flexion

Lumbricals

MCP 2-5 Flexion

PIP 2-5 Extension

DIP 2-5 Extension

tabletop/intrinsic plus position