Total long shot but thought I'd ask. The issues with his knees have been ongoing and have failed to make progress. Sometimes they improve after a dectomax injection but it only lasts for 2 weeks :-/ He is under the care of equine vets and has received 3 courses of dectomax, have tried lime sulphur, an oil based topical dectomax, wormer etc. He has been tested for cushings and for liver function- both are fine. Skin scrapings have shown nothing ( including mites!) he is currently on a course of antibiotics that aren't working (photos taken yesterday). Vet back out again tomorrow and think the next plan is to try steroids. Can anyone shed some light on what might be going on?