These figures and videos are to accompany Dr. Wong’s lecture to the Palm Beach Veterinary Society from September 2012.

Figure 5.  Patient with ABSENT deep pain perception.  Withdrawing the leg does NOT indicate the ability to consciously feel the noxious stimulus to the toe.  It is imperative that the clinician be able to distinguish this from the patient consciously turning to look at the toe and/or vocalize when the toe is pinched.

Figure 6.  Ambulatory tetraparesis that is upper motor neuron in character (C1-C5 spinal cord).  Note how the patient is long-strided in all four legs, is delayed in lifting its thoracic limbs, and crosses over in the thoracic limbs when turning.

Figure 7.  Ambulatory tetraparesis.  “Two-engine” gait.  Note how the thoracic limbs are short and choppy (lower motor neuron) while the pelvic limbs are long-strided and ataxic (upper motor neuron).  This indicates a problem in the C6-T2 spinal cord.

Figure 8.  Ambulatory paraparesis that is upper motor neuron in character.  Note the scuffing and crossing of the pelvic limbs.  The left side is more affected than the right.  The gait is ‘long-strided’ and ataxic.  The thoracic limbs are normal.  This indicates a problem in the thoracolumbar (T3-L3) spine.