Middle Metacarpophalangeal Joint

• Middle Proximal Phalanx
• Middle Metacarpal

Range of motion

Injuries:

Arthritis

Movement

Flexion

Primary - the Second Dorsal Interosseous Third Dorsal Interosseous Middle Lumbrical

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

Extension

Extensor Digitorum Middle

Radial deviation / Pronation - Second Dorsal Interosseous

Ulnar deviation / Supination - Third Dorsal Interosseous

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