Which medical history is characteristic of dorsal PIP joint dislocations?

Updated: Jan 18, 2018
  • Author: Jay E Bowen, DO; Chief Editor: Craig C Young, MD  more...
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Answer

Dorsal PIP joint dislocations

  • Dorsal dislocation of the PIP joint is a common injury that occurs secondary to joint hyperextension. The volar plate must be ruptured for dorsal dislocation to occur. This rupture usually occurs at the distal insertion site at the base of the middle phalanx and may involve a tiny avulsion fracture of the base of the middle phalanx.

  • When disruption of the collateral ligaments has also occurred, rotary deformity and lateral stress instability will be apparent. Joint dislocation should be assessed for collateral ligament injury, because any associated collateral ligament problems require orthopedic referral.


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