Laminar Serum - The Horse Forum
  • 1 Post By gottatrot
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post #1 of 3 Old 11-25-2018, 10:43 PM Thread Starter
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Laminar Serum

Yesterday I trimmed my horses bars down a bit and rolled his toes back. They were really hard when I trimmed him the last time so it was difficult and I was more on the conservative side. I had to stay late at work the following week, had guests over, then went away for holiday. It rained while I was gone so I figured great! I can finally go back and get the bars down. It went well and I pulled back the toe and stuff.

Today when I was picking out his feet I noticed a small half pea size bump about half way down his bar. It looks like yellow resin, and from what I understand might be laminar serum. I was wondering why this would have happened, and in that area. Did I trim the bar back too much in that area and compromise the white line there? Like I said, it's very small, maybe the size of the "O" on your keyboard, so I'm not worried, but was wondering why it would be there! Perhaps the bars were causing issues since they were overgrown before and there was damage there and finally an out for it? Why does laminar serum happen?
Thanks for sharing your thoughts.
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post #2 of 3 Old 11-26-2018, 01:50 AM
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Hi, I am imagining what you're seeing was an abscess. They are common under overgrown or 'impacted' bar material. I can't tell you that it's not possibly from over trimming them, but if you didn't gouge them deeper than sole level it's very unlikely.

I've never heard anyone talk of 'lamellar serum' but there can often be blood in the laminae of compromised/damaged hooves. For eg you might hit pink, or even red, even oozing if it were bad, when you trim a flared toe. You may even trim through it to clear material above if it were a short term 'insult'. This doesn't mean it's necessarily something current, but blood that's leaked in there will stay 'fresh' until it's open to the air.
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post #3 of 3 Old 11-26-2018, 04:20 AM
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Laminar serum is a term sometimes used for the byproducts of inflammation that occur from the stretching laminae during laminitis. These fluids along with the dead laminae are what end up hardening into the "laminar wedge." The part that is dead laminae is somewhat rubbery, and the rest is as you describe, hard, yellow and resin-like.

Most likely what you are seeing is just part of the white line/laminae that appear yellow and can get lumpy when merged with the sole as the sole and bars grow. So my thought is that you're just seeing normal anatomy/shedding, nothing to worry about.
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