The Alberta Dairy Hoof Health Project
Lesion-Severity-Guide-v0.7
Lesion-Severity-Guide-v0.7
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<strong>The</strong> <strong>Alberta</strong> <strong>Dairy</strong> <strong>Hoof</strong> <strong>Health</strong> <strong>Project</strong><br />
Lesion Severity Scoring Guide
Introduction:<br />
This lesion severity scoring guide is intended for the use of hoof trimmers, in particular<br />
those who are using the <strong>Hoof</strong> Supervisor® lesion recording system. <strong>The</strong> guide will assist<br />
trimmers to more consistently score the severity of the lesions they observe, making it<br />
possible to assess changes in severity from one trim session to the next.<br />
Acknowledgements:<br />
Dr. Paul Greenough prepared the initial version of the guide which was later revised with<br />
input from hoof trimmers participating in <strong>The</strong> <strong>Alberta</strong> <strong>Dairy</strong> <strong>Hoof</strong> <strong>Health</strong> <strong>Project</strong>, namely:<br />
• Elbert Koster • Philip Spence<br />
• Robin Geier<br />
• Matthew Hofstra<br />
• Taco Hansma • Darren Bell<br />
• Eric Bremer<br />
Photographs were provided by:<br />
• Dr. Paul Greenough, whose large library of photographs was assembled from those of<br />
many international contributors<br />
• Elbert Koster • Philip Spence<br />
• Vic Daniel<br />
• Dr. Dörte Döpfer, University of Wisconsin<br />
• Dr. André Desrochers, Université de Montréal<br />
For copies of this guide or to contribute photographs, contact:<br />
AgroMedia International Inc, 2508 Charlebois Drive NW, Calgary AB T2L 0T6<br />
phone: (403)284-5484, e-mail: steve@agromedia.ca, website: http://dairyhoofhealth.info<br />
2
Table of Contents<br />
3<br />
4<br />
4<br />
3<br />
11 12<br />
Axial (inside) view<br />
6<br />
Claw Zones<br />
10<br />
0<br />
2 2<br />
5 5<br />
1 1<br />
6<br />
7 8<br />
Abaxial (outside) view<br />
9<br />
Code Lesion Name Page Zones<br />
U Sole Ulcer 4 4<br />
T Toe Ulcer 8 1<br />
W White Line Lesion 12 1,2,3<br />
H Sole Hemorrhage 16 4,5,6<br />
F Foot Rot 19 9<br />
D Digital Dermatitis 22 9,10<br />
E Heel Erosion 27 6<br />
I Interdigital Dermatitis 28 0,10<br />
C Corkscrew Claw 29 7<br />
V Vertical Fissure 30 7,8<br />
X Axial Fissure 31 11,12<br />
G Horizontal Fissure 33 7,8<br />
Z Thin Sole 37 4,5<br />
K Interdigital Hyperplasia 39 0<br />
L Periople Ulcer 41 11<br />
3
Sole Ulcer<br />
U<br />
Sole ulcer is defined as a hole in the sole horn at the typical site (the posterior end of zone 4).<br />
Severities are scored after trimming.<br />
Severity 1<br />
<strong>The</strong> corium is exposed.<br />
4
Sole Ulcer Severity 1 continued<br />
5
6<br />
Sole Ulcer Severity 2<br />
Exposed granulation tissue is evident.
Sole Ulcer Severity 3<br />
Exposed granulation tissue is larger than the end of a pinky finger.<br />
7
Toe Ulcer<br />
T<br />
Severities are scored after trimming.<br />
Severity 1<br />
A hole in the sole horn in the toe region (zone 1 and/or 5), difficult to differentiate from, and<br />
similar to, a White Line Lesion in zone 1.<br />
8
Toe Ulcer Severity 2<br />
Granulation tissue present, short toe.<br />
9
10<br />
Toe Ulcer Severity 3<br />
Exposed necrotic tissue or bone, distinct smell, very short toe. Extreme cases may progress to<br />
involve other, more complicated lesions such as a vertical crack extending up to the coronary<br />
band.
Toe Ulcer Severity 3 (cont’d)<br />
11
White Line Lesion<br />
W<br />
All severities are scored after trimming.<br />
Severity 1<br />
Ranges from hemorrhage to slight separation of white line. Trimming may release small amounts<br />
of pus.<br />
12
White Line Lesion Severity 2<br />
Minor exposure of corium; detachment of<br />
horn, commonly at heel sole/wall junction but<br />
possibly in other areas; substantial pus.<br />
13
14<br />
White Line Lesion Severity 2 continued
White Line Severity 3<br />
More pronounced exposure of corium, possibly extending up to the coronary band.<br />
15
Sole Hemorrhage<br />
H<br />
Severity score is based on appearance after trimming.<br />
Severity 1<br />
Light coloured blood streaks in sole horn.<br />
16
Sole Hemorrhage Severity 2<br />
Darker red or blue areas left in the sole after it has been trimmed.<br />
17
18<br />
Sole Hemorrhage Severity 3<br />
Very dark red, purple or blue areas left in the sole after trimming.
Foot Rot<br />
F<br />
Severity 1<br />
Both digits are swollen equally up to the fetlock, including the<br />
dew claws.<br />
19
20<br />
Foot Rot Severity 2<br />
Tissue between coronary band and fetlock broken open, foul odour.
Foot Rot Severity 3<br />
Severity 2 with other complications.<br />
21
Digital Dermatitis<br />
D<br />
<strong>The</strong> Mortellaro scoring system is used for digital dermatitis.<br />
Score M0<br />
Clear skin; no sign of of existing or pre-existing<br />
lesion.<br />
Score M1<br />
A small, round lesion with a clear border, less<br />
than 2 cm in diameter; surface is moist, rough,<br />
mottled red-grey with scattered bright red spots;<br />
cow will retract fot when lesion is pressed,<br />
indicating acute pain, likely causing her to limp.<br />
22
Digital Dermatitis Score M2<br />
An angry red-grey mottled lesion larger than<br />
2 cm in diameter; painful to the cow when<br />
pressed.<br />
23
24<br />
Digital Dermatitis Score M3<br />
A post-treatment healing stage with a dry, brown scab on the surface; no reaction from cow<br />
when lesion is pressed.
Digital Dermatitis Score M4<br />
Lesion has become chronic with raised growths on surface; no longer painful.<br />
25
26<br />
Digital Dermatitis Score M4.1<br />
A chronic lesion with new M1 lesions beginning on surface.
Heel Erosion<br />
E<br />
Score all cases as severity 3.<br />
27
Interdigital Dermatitis<br />
I<br />
Score all cases as severity 1.<br />
28
Corkscrew Claw<br />
C<br />
Severity 1<br />
<strong>The</strong> sole gradually grows to face inwards and upwards as the axial side of the claw rotates.<br />
Score all cases as severity 1.<br />
29
Vertical Fissure<br />
V<br />
Severity 1<br />
Score all as severity 1, irrespective of the<br />
size of the crack.<br />
30
Axial Fissure<br />
X<br />
Severity is determined by the length and<br />
depth of the fissure.<br />
Severity 1<br />
A visible track appears indicating the start<br />
of a fissure but not the full distance from<br />
the interdigital space to the sole.<br />
31
32<br />
Axial Fissure Severity 2<br />
An enlarged crack extending from the interdigital space to the sole.
Axial Fissure Severity 3<br />
<strong>The</strong> corium is exposed in the fissure.<br />
33
Horizontal Fissure<br />
G<br />
Severity 1<br />
A slight groove in the wall parallel to the coronary band.<br />
34
Horizontal Fissure Severity 2<br />
A deeper groove but loose horn is not yet evident.<br />
35
36<br />
Horizontal Fissure Severity 3<br />
Lower portion of horn is partially detached from underlying tissue, resembling a ‘thimble’.
Thin Sole<br />
Z<br />
Severity 1<br />
Sole is ‘spongy’ when finger or ‘hoof tester’ pressure is applied.<br />
37
Thin Sole Severity 2<br />
Sole is ‘spongy’ and toe is less than 3 inches in length from coronary band to tip.<br />
Thin Sole Severity 3<br />
Sole is worn through, corium is exposed and may be bleeding.<br />
Photos Required<br />
38
Interdigital Hyperplasia<br />
Severity 1<br />
Growth of tissue (hyperplasia) between claws<br />
but does not fill interdigital space.<br />
K<br />
Severity 2<br />
Hyperplastic tissue fills interdigital space.<br />
39
40<br />
Interdigital Hyperplasia Severity 3<br />
Growth of tissue (hyperplasia) between claws causes claws to spread.
Periople Ulcer<br />
L<br />
Severity 3<br />
<strong>The</strong> size of the granulation tissue<br />
is bigger than a pea, pushing<br />
the crack open and creating an<br />
underrun wall.<br />
Severity 1<br />
A crack in the perioplic horn in the abaxial<br />
region, usually very painful.<br />
Severity 2<br />
Granulation tissue has formed out of the<br />
crack.<br />
41
version 0.7 - 1 December 2014