Exostosis

Hug

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22 November 2012
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Hi, how serious is a medial exostosis of the third metacarpian bone in a thirteen year old horse? How likely is it that this will cause lameness or limpness in the future? How do you help horses with this condition? Many thanks
 
Ah, in that case I will comment. Splints are very common generally. Most splints do not cause ongoing lameness issues although they can be sore in the few days they are forming. For most horses, there is no ongoing issue beyond the unsightly lump they leave behind which is obviously an issue if you wish to show. BUT occassionally a splint can cause a more significant problem. Mine has had six weeks off because he continued to be lame on his. Vet had to scan his leg to ensure the suspensory wasn't affected. My understanding is that if the exostosis is rubbing on the suspensory, the effect is like rubbing sandpaper on silk and can therefore be a big problem. As stated at the start of the post though, I understand this to be the exception not the rule.
 
Many thanks for your reply, this is very helpful as it confirms what my physio said, that this is only a problem if it interferes at all with the suspensory ligament...

Ah, in that case I will comment. Splints are very common generally. Most splints do not cause ongoing lameness issues although they can be sore in the few days they are forming. For most horses, there is no ongoing issue beyond the unsightly lump they leave behind which is obviously an issue if you wish to show. BUT occassionally a splint can cause a more significant problem. Mine has had six weeks off because he continued to be lame on his. Vet had to scan his leg to ensure the suspensory wasn't affected. My understanding is that if the exostosis is rubbing on the suspensory, the effect is like rubbing sandpaper on silk and can therefore be a big problem. As stated at the start of the post though, I understand this to be the exception not the rule.
 
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