In immobilization, which position constitutes the functional position of the hand and wrist?

In immobilization, which position constitutes the functional position of the hand and wrist?

• A. Slight wrist extension, slight ulnar deviation, fingers flexed at the MCP, PIP & DIP joints, and thumb slightly abducted.
• B. Slight wrist extension, slight radial deviation, fingers extended, thumb adducted.
• C. Neutral wrist, fingers flexed, thumb neutral.
• D. Wrist flexion, fingers flexed, thumb abducted.

Answer: (A)

Positioning for immobilization aims to preserve tissue length and allow a functional grip once healing occurs. Placing the wrist in slight extension uses the tenodesis effect so the fingers rest in a flexed, ready-to-grip posture. A small amount of ulnar deviation follows the natural resting alignment of the hand and helps keep ligaments balanced. Keeping the fingers flexed at the MCP, PIP, and DIP joints maintains flexor tendon length and reduces the risk of contractures, while the thumb is kept slightly abducted to allow opposition and functional use of the hand. This combination best supports a functional grasp after immobilization, whereas positions that keep the wrist neutral or flexed, or that extend the fingers, don't promote an effective grip or can promote stiffness.

Positioning for immobilization aims to preserve tissue length and allow a functional grip once healing occurs. Placing the wrist in slight extension uses the tenodesis effect so the fingers rest in a flexed, ready-to-grip posture. A small amount of ulnar deviation follows the natural resting alignment of the hand and helps keep ligaments balanced. Keeping the fingers flexed at the MCP, PIP, and DIP joints maintains flexor tendon length and reduces the risk of contractures, while the thumb is kept slightly abducted to allow opposition and functional use of the hand. This combination best supports a functional grasp after immobilization, whereas positions that keep the wrist neutral or flexed, or that extend the fingers, don't promote an effective grip or can promote stiffness.