Proximal interphalangeal joint "simple" dislocations are usually
dorsal, and may be reduced by extending the finger to reproduce the
deformity and then dorsal pressure on the base of the middle phalanx.
These are usualy stable following reduction. Volar dislocations
represent a more serious injury, are less commonly easily reduced, and
more commonly unstable following reduction. Although often passed off
as a "jammed finger", PIP dislocations commonly result in 6-12 months
of swelling, PIP flexion contracture, and permanent joint enlargement.