intrinsic contracture
Tightness of the intrinsic muscles of the hand causing characteristic finger positioning with MCPJ flexion and IPJ extension.
Full Definition
Intrinsic contracture refers to pathological tightness or shortening of the intrinsic muscles of the hand, including the lumbricals and interossei. This condition results in a characteristic hand posture where the metacarpophalangeal joints are held in flexion while the interphalangeal joints are extended, creating a claw-like appearance. Intrinsic contracture can develop following trauma, burns, ischemia, or prolonged immobilization. The condition significantly impairs hand function as it prevents normal finger positioning for grasp and pinch activities. Diagnosis is confirmed through clinical examination including the intrinsic tightness test.
Usage
Usage note: Distinguish from extrinsic contractures which involve long flexor tendons.
In Context
- "The patient developed intrinsic contracture following compartment syndrome of the hand." — Clinical assessment
- "Surgical release of intrinsic contracture was performed to restore finger extension." — Operative note