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Interphalangeal Joints of the Hand

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Description

DIP PIP and MCP joints of the hand.jpg
Labeled radiograph of the hand.jpg
Illustration of the bony anatomy of the hand and wrist.jpg

General

  • Interphalangeal Joints of the hand are synovial hinge joints
  • Span the proximal, middle and distal phalanx of the hand

Nomenclature

  • Digits 2-5
    • Proximal Interphalangeal Joint (PIPJ): located between the proximal and middle phalanx
    • Distal Interphalangeal Joint (DIPJ): located between the middle and distal phalanx
  • Thumb: Only has two phalanges, so it is termed the interphalangeal joint

Articular surfaces

  • Head of proximal phalanx
  • Base of middle phalanx
  • Head of middle phalanx
  • Base of distal phalanx

Ligaments

  • Medial collateral ligament
  • Lateral collateral ligament

Actions

  • Permit fine motor movements of the dingers
  • Facilitate movement only in flexion and extension

Vascular Supply

  • Proper palmer digital arteries

Innervation

  • Proper palmer digital nerves

Clinical Significance


See Also


References

Created by:
John Kiel on 1 February 2024 16:33:48
Authors:
Last edited:
6 February 2024 17:03:23
Category: