Pinch Strength

A.) B&L pinch gauge; B.) Tip-pinch C.) Lateral/Key pinch; D.) 3-Jaw Chuck

A.) B&L pinch gauge; B.) Tip-pinch
C.) Lateral/Key pinch; D.) 3-Jaw Chuck

Materials Needed:

  • B&L pinch gauge
  • Paper, pen/pencil (to record scores)

Instructions:

  • Have client seated comfortably, facing OT, with shoulder adducted, and elbow flexed to 90 degrees (parallel to ground).
  • Show client which of the three pinch grips to do first (refer to images below):
    • Tip-pinch – thumb and index fingers.
    • Lateral/Key pinch – thumb pad and lateral aspect of index finger.
    • Palmar pinch/3-Jaw Chuck – thumb, index, and middle fingers.
  • Hold onto distal portion of B&L pinch gauge to help the client maintain steadiness.
  • Have client perform one of the pinch grips above with three successive trials for each hand.
    • Make sure to give client a few minutes rest in between trials to ensure accuracy.
    • Record score for pinch strength after each trial.
      • Score is the average of the three trials.
  • After first pinch grip test is done, proceed onto the other two, following the same directions mentioned above.

Standardized Norms:

Tip Pinch Standardized Norms

Tip Pinch Standardized Norms

Lateral/Key Pinch Standardized Norms

Lateral/Key Pinch Standardized Norms

3-Jaw Chuck Standardized Norms

3-Jaw Chuck Standardized Norms

Documentation:

  • Record the average of the three trials for each hand, and also for each pinch position.  Compare the standard to averages using the charts above.
  • “3-jaw chuck grip strength = 25. Ct. is WNL.”

– Anthony Mead

 

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