To compare a lateral pinch to norms, which positioning is standard for the pinch meter?

• A. Forearm in neutral and pinch meter placed on the middle phalanx
• B. Forearm in neutral and pinch meter placed on the DIP joint
• C. Forearm in pronation and pinch meter placed on the DIP joint
• D. Forearm in pronation and pinch meter placed on the middle phalanx

Answer: (A)

Standardizing how you measure lateral (key) pinch strength is about consistent body and device positioning so scores reflect true pinch force and can be meaningfully compared to normative data. Keeping the forearm in neutral prevents rotation or torque from the forearm and keeps the wrist in a neutral position, eliminating extra leverage that could inflate or deflate the reading. Placing the pinch meter on the middle phalanx of the index finger gives a stable, repeatable contact point and lever arm for the thumb to press against; positioning the device on the DIP joint would alter the moment arm and contact area, leading to variability in the measurement. This neutral forearm and middle-phalangeal placement yields a reliable, comparable measure of lateral pinch strength.