Table 1.

Canine Basso–Beattie–Bresnahan Criteria [7]

0 = No observable hindlimb (HL) movement

1 = Slight movement of one or two joints

2 = Extensive movement of one joint, or extensive movement of one joint and slight movement of one other joint

3 = Extensive movement of two joints

4 = Slight movement of all three joints of the HL

5 = Slight movement of two joints and extensive movement of the third

6 = Extensive movement of two joints and slight movement of the third

7 = Extensive movement of all three joints in the HL

8 = Plantar placement of the paw with no weight support

9 = Plantar placement of the paw with weight support only when stationary, or occasional, frequent, or consistent weight-supported dorsal stepping and no plantar stepping

10 = Occasional weight-supported plantar steps; no FL–HL coordination

11 = Frequent to consistent weight-supported plantar steps and no FL–HL coordination

12 = Frequent to consistent weight-supported plantar steps and occasional FL–HL coordination

13 = Frequent to consistent weight-supported plantar steps and frequent FL–HL coordination

14 = Consistent weight-supported plantar steps, consistent FL–HL coordination, and predominant paw position is externally rotated when it makes initial contact as well as just before it is lifted off; or frequent plantar stepping, consistent FL–HL coordination, and occasional dorsal stepping

15 = Consistent plantar stepping and consistent FL–HL coordination and no toe clearance or occasional toe clearance; predominant paw position is parallel to the body or internally rotated at initial contact

16 = Consistent plantar stepping and consistent FL–HL coordination and toe clearance occur frequently; predominant paw position is parallel or internally rotated at initial contact and externally rotated at liftoff

17 = Consistent plantar stepping and consistent FL–HL coordination and toe clearance occur frequently; predominant paw position is parallel or internal at initial contact and liftoff

18 = Consistent plantar stepping and consistent FL–HL coordination and toe clearance occur consistently; predominant paw position is parallel or internal at initial contact and liftoff. Trunk instability is present

19 = Consistent plantar stepping and consistent FL–HL coordination and toe clearance occur consistently during forward limb advancement; predominant paw position is parallel or internal at initial contact and liftoff. Trunk instability is not observed