Score: Mallet classification

Use: Recovery after brachial plexus injury

Abduction

  • Grade I: No active motion
  • Grade II: <30°
  • Grade III: 30° - 90°
  • Grade IV: >°
  • Grade V: Normal movement
  • External rotation

  • Grade I: No active motion
  • Grade II: 0°
  • Grade III: <20°
  • Grade IV: >20°
  • Grade V: Normal movement
  • Hand to head

  • Grade I: No active motion
  • Grade II: Impossible
  • Grade III: Difficult
  • Grade IV: Easy
  • Grade V: Normal movement
  • Hand to back

  • Grade I: No active motion
  • Grade II: Impossible
  • Grade III: To S1 level
  • Grade IV: To T12 level
  • Grade V: Normal movement
  • Hand to mouth

  • Grade I: No active motion
  • Grade II: Trumpet sign
  • Grade III: Partial trumpet sign
  • Grade IV: <40° abduction
  • Grade V: Normal movement
  • The "trumpet sign" is named after the way of holding the trumpet in a particular unit of the French army (almost 90° abduction of affected arm when bringing hand to the mouth).

    Reference

    http://emedicine.medscape.com/article/317057-treatment