Index Middle Phalanx

Image from The Interactive Hand CD  Articulations:

Index Proximal Interphalangeal Joint
Index Distal Interphalangeal Joint
Muscle Attachments:

Finger extensor mechanism
Flexor Digitorum Superficialis Index
Extensor Digitorum Index
Ligament Attachments:

Epiphyses:

Blood Supply:

Fractures:

Variations:

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