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ASSH > Information for Public & Patients > Hand Anatomy > Joints > Small Metacarpophalangeal Joint

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Small Metacarpophalangeal Joint

Bones:

Small Proximal Phalanx
Small Metacarpal

Ligaments:

Range of motion

Movement

Flexion

Primary -

Flexor Digiti Minimi
Third Palmar Interosseous
Small Lumbrical

Secondary (after flexion has been initiated) - Flexor Digitorum Superficialis Small and Flexor Digitorum Profundus Small

Extension

Extensor Digitorum Small
Extensor Digiti Minimi

Adduction (Radial deviation) / Pronation Third Palmar Interosseous

Abduction (Ulnar deviation) / Supination Abductor Digiti Minimi Extensor Digiti Minimi

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