We present a splint system for a protected mobilization program after close
d reduction of articular proximal phalangeal base fractures. This therapy c
onsists of the periarticular soft tissue and functional anatomy. The soft-t
issue around the base of the proximal phalanx leads to a circular stabiliza
tion effect. This so called Zancolli Complex (Metacarpophalangeal Retention
Apparatus) can be used with the effect of a brace treatment. Treating 31 p
atients with articular fractures of the proximal phalanx way we found good
functional results within a mean follow up period of 2 years after the acci
dent.