Which statement best describes the intrinsic plus position?

Study for the NBCOT Hand Injuries and Intervention Test. Prepare with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for success!

Multiple Choice

Which statement best describes the intrinsic plus position?

Explanation:
The intrinsic plus position places the hand so that the intrinsic muscles are in a lengthened state that supports a safe, functional posture: the MCP joints are flexed while the IP joints are extended, and the thumb sits in abduction to maintain the web space. This combination helps prevent contractures by keeping the collateral ligaments of the MCP joints taut and the extensor mechanism balanced. The described best match has the MCP joints flexed, the IP joints extended, and the thumb abducted, which aligns with this posture. If the MCP joints were extended or the IP joints flexed, that would correspond to a different, less protective alignment (intrinsic minus). Likewise, the thumb would be expected to be abducted in this position; adduction would not reflect intrinsic plus.

The intrinsic plus position places the hand so that the intrinsic muscles are in a lengthened state that supports a safe, functional posture: the MCP joints are flexed while the IP joints are extended, and the thumb sits in abduction to maintain the web space. This combination helps prevent contractures by keeping the collateral ligaments of the MCP joints taut and the extensor mechanism balanced. The described best match has the MCP joints flexed, the IP joints extended, and the thumb abducted, which aligns with this posture. If the MCP joints were extended or the IP joints flexed, that would correspond to a different, less protective alignment (intrinsic minus). Likewise, the thumb would be expected to be abducted in this position; adduction would not reflect intrinsic plus.

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