Fluid filled lump on cannon bone - any ideas...?

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steph2479

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My gelding has developed a fluid filled lump (about the size of a ping pong ball) at the top (and slightly to the outside) of his off hind cannon. my initial though was a bog spavin, but it is NOT on the front of the hock joint, but just below the joint. It appeared a couple of days after throwing a major tantrum on the road out hacking, so I think it's concussion related. he is very slightly lame/stiff on this leg, the swelling hasn't changed over the last few days - have tried keeping him out to walk on it, and then box rested and bandaged with ice tight.
Next call is the vet, but just intrigued if anyone has any ideas...? :confused:
 
It could be the check ligament, that is in the right area and injury could follow a slip or stretching which could have happened if messing about on a slippery road. Cold hosing, ice and rest until vet comes.
 
Not the right place for check ligament and they are rarely a problem in hindlimbs. More likely an extensor tendon strain and sheath effusion. Usually don't cause any lameness issues but best to get vet to check it over and scan if needs be.
 
Thanks. not the right place for a check ligament - did wonder whether he could have an annular ligament strain though. It's a very circular swelling which struck me as a little odd though! I've had my share of tendon/ligament problems, but never seem a lump like this...!
 
Sheath swellings can come up as v circular fluid lumps. Windfalls of the ddft sheath can have that same appearance. Relatively unusual though.
 
I'm sure the annular ligs bind the extensor tendons and anterior muscles to the front of the tibia/hock/metatarsus? They did when I did my exams anyway...

hmm, definately one for the vet tomorrow i think.
Thanks for the ideas!
 
Strains of hock annular logs don't really occur. Most annular ligament issues regardless of what joint region they refer to are actually caused by primary strains or damage to the annular ligaments themselves. Now recognised as being tendon and sheath lesions and the effusions they create are restricted by the annular ligs. Yes, def worth a visit from your vet to put your mind at rest.
 
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