Table 1.

Three-point scales employed to evaluate the degree and clinical signs of motor blockade and the degree of sensory blockade and clinical response to a mosquito clamp noxious stimulus

Grade	Blockade	Clinical signs
Motor response
1	Normal	Normal ability to walk or stand using the blocked limb, no lameness
2	Partial blockade	Intermittent non-weightbearing, moderate lameness when walking
3	Complete blockade	Non-weightbearing, weightbearing on dorsal carpus >50% of the time, severe lameness when walking
Sensory response
1	Normal	Normal response with rapid withdrawal of the limb, weight shifting and/or head movement toward the testing site, and/or vocalisation
2	Partial blockade	Delayed or attenuated response to stimulus
3	Complete blockade	Absence of response to stimulus