DTRs Table
  • Apply standard force (with the hammer).

  • Estimate Speed and Strength (contraction/relaxation).

  • Reflex asymmetry has more significance than the absolute activity of the Reflex.

  • Clonus: persistent involuntary flexion and extension of the joint under extension or flexion pressure.

  • Reinforcement maneuver: pulling against the interlocked finger or clenching the cheeks.


    • Grading of Reflexes (DTRs)
    Hyporeflexia 0 Absent
    Hyporeflexia 1+ Decreased
    NORMAL 2+ Normal
    Hyperreflexia 3+ Hyperactive
    Hyperreflexia 4+ Hyperactive with Clonus

    DTR Table
    REFLEX elicit nerve roots
    Biceps biceps' tendon C5, C6
    Triceps triceps' tendon C6, C7, C8
    Radial Styloid apophysis C5, C6
    Patellar quadriceps' tendon L2, L3, L4
    Achilles achilles' tendon S1, S2
    Jaw jerk jaw open, chin pons