Motor Exam - Lower Extremity

 

 

 

Tone

  1. With heels on bed, wiggle knee fast with low amplitude, and watch for foot out of sync (normal).
  2. Hold knee in both hands, wiggling to ensure relaxation. Briskly flex knee, looking for heel to remain on the bed. With rigidity/spacticity, the heel will lift and crash down.
  3. clonus: have knee slightly bent and quickly dorsiflex and hold the foot