Ring Metacarpophalangeal Joint

Bones:

Ligaments:

Range of motion

Injuries:

Arthritis

Movement

Flexion

Primary -

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

Extension - Extensor Digitorum Ring

Radial deviation / Pronation - Second Palmar Interosseous

Ulnar deviation / Supination - Fourth Dorsal Interosseous

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