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SESK: Stuff Everyone Should Know · sesk.info/horse-hoof-abscess

Which problem does Merck call the most common cause of lameness in horses?

A foot abscess is the top cause of lameness.

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  1. Navicular disease
  2. Knee arthritis
  3. Foot (sole) abscess ✔

Why: Merck says foot abscesses are the most common cause of lameness in horses. Trapped bacteria cause pressure and sudden severe pain, often with no visible wound.

Huh, didn't know that: UMN says the hoof wall may feel warmer, and you can feel pulses near the pastern.

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I saw my brother riding uncomfortably on a tall horse. I told him to get off his high horse!
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References

Answer: Foot (sole) abscess. Merck says foot abscesses are the most common cause of lameness in horses. Trapped bacteria cause pressure and sudden severe pain, often with no visible wound.

  1. Disorders of the Foot in Horses (Merck Veterinary Manual) www.merckvetmanual.com/horse-owners/bone-joint-and-muscle-disorders-in-horses/disorders-of-the-foot-in-horses
    Foot abscesses, also called "sole abscesses" or "subsolar abscesses" are the most common cause of lameness in horses.
    Checked 2026-10-10.
  2. Horse hoof abscesses (UMN Extension) extension.umn.edu/node/1521
    When the pressure builds it causes sudden pain and severe lameness.
    Checked 2026-10-10.
  3. Horse hoof abscesses (UMN Extension) extension.umn.edu/node/1521
    Often, the hoof wall is warmer, and you can feel pulses near the pastern.
    Checked 2026-10-10.

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