Intrinsic Plus Hand eMedicine Orthopedics

Description: The intrinsic plus position is otherwise known as the safe position for hand splinting. The hand can be immobilized in this position for long periods of time without developing as much stiffness as would occur if the digits were positioned differently. In the intrinsic plus position, the metacarpophalangeal (MP) joints are flexed at 60-70°, the interphalangeal (IP) joints are fully extended, and the thumb is in the fist projection. The wrist is held in extension at 10° less than maximal.
Synonyms and related keywords: intrinsic plus position, safe position for hand splinting, hand immobilization, hand stiffness, intrinsic contractures, hand deformity, hand disability, intrinsic muscle contracture, intrinsic tightness test, intrinsic plus test
Jessica Gillespie, MD & Bradon J Wilhelmi, MD 2005