The proximal interphalangeal joint: arthritis and deformity.

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Abstract

Conflict of interest statement: ICMJE Conflict of interest statement: D. Herren declares royalties from KLS Martin, activity relating to the submitted work; board membership of and stock options from Medartis AG Basel, activities outside the submitted work. 11. N Z Med J. 1979 Jan 24;89(628):51-4. The pseudo-boutonniere deformity. Rothwell AG. The pseudo-boutonniere deformity is a boutonneire-like deformity resulting from a hyperextension injury to the proximal interphalangeal joint causing tearing of the volar soft tissues. It is seen almost exclusively in the little and ring fingers. The features, pathomechanics and prophylaxis of the condition are described. The treatment is by dynamic splintage and the importance of distinguishing the deformity from the true boutonniere deformity is emphasised.