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Professional Technical IVT

pseudoboutonniere deformity

Pronunciation: SOO-doh-boo-ton-ee-AIR

Finger deformity mimicking boutonniere pattern but caused by different pathological mechanisms.

Full Definition

Pseudoboutonniere deformity presents with PIP joint flexion and DIP joint hyperextension similar to true boutonniere deformity, but results from different underlying pathology. Common causes include volar plate contracture, flexor digitorum superficialis contracture, or collateral ligament tightness rather than central slip rupture. The deformity may develop after trauma, infection, or prolonged immobilization. Distinguishing pseudoboutonniere from true boutonniere deformity is crucial because treatment approaches differ significantly. Clinical examination and sometimes advanced imaging are necessary to identify the underlying pathological process and guide appropriate surgical intervention.

Usage

Usage note: Hyphenation varies; ensure consistency within documents. Distinguish clearly from true boutonniere deformity.

In Context

  • "Clinical examination revealed pseudoboutonniere deformity secondary to volar plate contracture." — Specialist consultation
  • "The pseudoboutonniere deformity required volar plate release rather than central slip reconstruction." — Surgical planning

Also known as

pseudo-boutonniere false boutonniere

Don't confuse with

boutonniere deformity swan neck deformity

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