0 |
No hindlimb (HL) movements are observed |
|
1 |
Mild movements of 1 or 2 HL joints |
Mild – Less than 50% of joint capacity |
2 |
Extensive movement of 1 joint and possible mild movement of another HL joint |
Extensive – More than or equal to 50% of joint capacity |
3 |
Extensive movement of 2 HL joints |
Two joints = generally, hip and knee |
4 |
Mild movements of all 3 joints |
Three joints = hip, knee, and ankle |
5 |
Mild movement of 2 joints and extensive movement of the 3rd HL joint |
|
6 |
Extensive movements of 2 joints and delicate movement of the 3rd HL joint |
3rd joint = ankle |
7 |
Extensive movements of the 3 joints |
|
8 |
Mild movements without supporting body weight or paw resting without supporting body weight |
Rhythmic extension of 3 HL joints, with the trunk positioned sideways |
9 |
Plantar rest with support of immobile body weight or occasional, frequent or consistent support of body weight with dorsal rest |
Weight support = muscle contraction. HL extension during plantar rest of the paw or elevation of the immobile pelvis |
10 |
Step occasionally supporting body weight, with no coordination between forelimbs (FL) and HL |
Occasionally > 5% and lower than or equal to 50%. Steps – plantar contact with weight support; the HL advances to reestablish plantar contact. Coordination – simultaneous movements between the HL and FL, alternating between sides |
11 |
Frequent to consistent steps with weight support without coordination between HL and FL |
Frequency – 51 to 94% of the time; Consistent – 95 to 100% of the time |
12 |
Frequent to consistent steps with support of body weight and occasional coordination between the FL and HL |
60 to 50% coordinated locomotion |
13 |
Frequent to consistent steps with support of body weight and frequent coordination between FL and HL |
51 to 95% coordinated locomotion |
14 |
Consistent step coordination with plantar rest and predominant position of the paw and rotation in the initial contact and in elevation, frequent plantar steps, consistent coordination between FL and occasionally with dorsal rest |
Rotation => internal and external rotation of the hind paw when it is resting and raised |
16 |
Consistent step coordination with plantar rest, predominant position of the paw in parallel in the initial contact and in elevation |
Frequent liberty of the 1st toe => More than half the steps occur with no scratching sounds |
17 |
Consistent step coordination with plantar rest, predominant position of the paw in parallel in the initial contact and in its elevation |
|
18 |
Consistent coordination of the step with plantar rest and consistent liberation of the 1st toe. Position of the paw in parallel in the initial contact and in its elevation |
Consistent scratching with 4 toes for a period of 4 minutes |
19 |
Consistent coordination of the step with plantar rest, consistent liberation of the 1st toe. Position of the paw in parallel in the initial contact and in its elevation, with the tail downward most of the time |
Tail downward => tail touches the floor during the steps |
20 |
Consistent step coordination with plantar rest, consistent liberation of the 1st toe. Parallel position of the paw in the initial contact and in elevation, the tail consistently upward and trunk instability |
Tail elevated => does not touch the floor. Trunk instability => trunk lateralization when turning rapidly (loss of balance) |
21 |
Consistent coordination during walking, consistent movement of the 1st toe. Parallel position of the paw during rest and elevation. Tail upward. Consistent trunk stability. |
Consistent trunk stability, without wobbling or falling, the movement of the pelvis and tail coordinated with locomotion. |