(Grissett) You are presented with a 4 year old Hereford cow…

(Grissett) You are presented with a 4 year old Hereford cow with a 2 week history of lameness. The owner describes her as a grade 4 lameness. You look at the cow in a pen and note significant swelling of the limb with a draining tract pictured below. The owner informs you the cow is 6 months bred and cannot spend much money on treatment. What is your diagnosis and what is your treatment recommendation based on the owner’s financial constraint?