Why is the intrinsic plus position significant in hand splinting?

• A. Safe position for hand splinting and reduces stiffness over long immobilization
• B. It increases stiffness
• C. It reduces range of motion
• D. It is used only for healing fractures

Answer: (A)

Immobilizing the hand in the intrinsic plus position keeps the joints in a posture that preserves the length of the intrinsic muscles and the ligaments around the joints. With the MCP joints flexed and the index and long finger IP joints extended, the collateral ligaments and volar plates are maintained in a favorable length, which helps prevent scar contractures and keeps tendon gliding smoother. This anti-deformity, functional resting position reduces the likelihood of long-term stiffness when immobilization is necessary, making it ideal for many hand injuries and post-surgical situations. It isn’t about increasing stiffness, nor is it limited to fractures; it’s used broadly to protect healing tissues while preserving future range of motion.