Irreducible rotational anterior dislocation of the proximal interphalangeal joint. A spin drier injury.

Two cases are described of anterior dislocation of the proximal interphalangeal joint which could not be reduced because of interposition of the central slip of the extensor mechanism. In common with previously reported cases the injuries were sustained in a spin drier. The literature on anterior dislocation of the proximal interphalangeal joint is reviewed. Three distinct patterns of dislocation are recognised and their management is discussed.