Infectious lameness (Yr 4)

Question 1

what are the main infectious foot lesions?

Answer 1

digital dermatitis
foul in the foot (interdigital phlegmon)
interdigital dermatitis
heel horn erosion

Question 2

what are some other names for digital dermatitis?

Answer 2

hairy heel warts
strawberry foot
mortellaro disease

Question 3

what causes digital dermatitis?

Answer 3

Treponema spp.

Question 4

what are the clinical signs of digital dermatitis?

Answer 4

painful, reddened area just above the interdigital cleft between the heel bulbs
erected hairs around the lesion

Question 5

how is digital dermatitis graded?

Answer 5

M0 - no lesions
M1 - early small lesion <2cm circumscribed red/grey epithelial defect
M2 - acute active ulceration or granulomatous lesion greater than 2cm
M3 - healing stage when the lesion is covered in scab like lesion
M4 - late chronic lesion, thickened epithelium or proliferative