swollen leg and antibiotics

SO1

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last wednesday i was going to take my pony SJ - had the day off work and got him in early from field. Whilst I was grooming him I noticed he has some dried blood on his hind outside leg mid cannon on further inspection he has a small cut more like a graze and his leg was swollen including his fetlock.

Got experienced YO to look at him trotted him up and he was not lame and as the graze was small and did not need stitching she said monitor him and not call the vet immediately.

Sat morning his leg was still swollen and he was a tiny bit lame so got the emergency vet out. Vet said probably an infection and so antibiotics for 6 days and bute for 3. She said still ride in walk and a bit of trot and to keep him turned out as he needs to move about to help reduce the inflamation and also as he needs to lose weight he needs all the exercise he can get.

The swelling has gone down but not totally, he is still a tiny bit lame (so small that most people would stuggle to notice). The area that is still swollen is mainly round where the cut is. Pony does not mind me massaging or prodding his leg, cleaning the area where the cut is, rubbing the bit that has scabbed over but then he is a very gentle natured pony.

When the vet came she said there was a risk he could have a bone chip or fractured his splint but she could not feel anything but she said the swelling could be consealing it. I am presuming that if he had a fracture that would be painful and he would be more lame?

I am concerned that after 6 days of antibiotics the swelling has not gone away and the cut it not totally healed over - the scab "fell" off yesterday when I was rubbing it after cold hosing his leg and there was a bit of blood underneath so it was not completely healed.

I will call the vet tomorrow but as i work full time it is difficult for me to get a day off work at very short notice so I am hoping the vet can say it can wait until next week to be seen so I can organise time off work.

Does anyone have experience of anything similar do you think the heat this week we have had may have prevented the swelling going down as quickly as it might have done, it has been 27-30C most of this week.

How long does it normally take for antibiotics to work or swelling due to bruising to go down?
 
If the swelling has reduced the infection has most likely gone now just leaving a bruised area which can take a while to fully recover. As long as he gets better each day rather than worse it is most likely to take a week or so to go completely and may leave a slight lump on the bone which could stay for some time.
I have known similar injuries to leave a splint type lump which reduces over months and one day you realise it has disappeared.
 
I'd also be cautious about over-vigorous cleaning of the grazed area. You can destroy the new skin cells that try to grow inward from round the edges of the wound. They are tiny and fragile to begin with so a powerful jet from the hose could damage the new growth, or just too long being cold hosed, or over-enthusiastic of rubbing with creams or gels or Hibiscrub. An ice pack carefully applied to the area might be better than cold hosing but I'd monitor the situation for a while yet and if it worsens, doesn't clear up or you're worried at any time, get the vet out. Fingers crossed.
 
He did have a broken splint bone in the end has been at a rehab yard for a week on box rest as he was refusing to do box rest at normal yard - jumped out. He has a long spell of box rest followed by more xrays.
 
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