burn boutonniere deformity
Pronunciation: burn boo-ton-ee-AIR dee-FOR-mih-tee
A hand deformity resulting from burn contractures affecting the proximal interphalangeal joint, causing flexion at the PIP joint and hyperextension at the DIP joint.
Full Definition
Burn boutonniere deformity is a specific hand contracture that develops following deep burns to the dorsal aspect of the fingers. The injury damages the central slip of the extensor tendon at the proximal interphalangeal (PIP) joint, leading to characteristic finger positioning with PIP joint flexion and compensatory hyperextension at the distal interphalangeal (DIP) joint. This deformity significantly impacts hand function and requires specialized reconstructive procedures. Early recognition and intervention with splinting and therapy are crucial to prevent permanent disability. The term 'boutonniere' refers to the buttonhole-like appearance created by the protruding PIP joint through the damaged extensor mechanism.
Usage
Usage note: Note the French pronunciation of 'boutonniere' - avoid anglicizing it as 'button-eer'. Specify 'burn' to distinguish from traumatic boutonniere injuries.
In Context
- "The patient developed bilateral burn boutonniere deformities following electrical injury to both hands." — Burn surgery case report
- "Early splinting protocols should be initiated to prevent burn boutonniere deformity in patients with dorsal hand burns." — Clinical practice guidelines