Some chronic ear conditions can cause the ear canal in dogs to shrink. For this reason, canine ear problems should be reported to a veterinarian for treatment to avoid complications later.
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Identification
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Unlike humans, who have ear canals that are straight, a dog's ear canal is shaped more like an ''L.'' The dog's canal at first descends vertically and then takes a 90-degree bend. The shape makes a dog's ear particularly prone to infections because debris cannot work itself out as easily.
Effects
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Repeated ear infections that do not respond to treatment, or ear infections that are left untreated, may worsen to the point that they cause tissues to swell or a buildup of scar tissue in the ear canal. This can cause shrinkage or closing of ear canals.
Options
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Medications can help shrink swollen tissues and re-open the ear canal. In severe cases, and when medications are unable to reach the canal, surgery may be the only option.
Types
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There are different surgical options for narrowed/closed ear canals. Two types of surgery exist for narrow or closed ear canals: lateral ear resection and total ear ablation. Lateral ear resection is the most conservative approach for ears with hope. Total ear ablation is a more invasive approach for helpless ears.
Significance
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Lateral ear resection removes the vertical part of the ear canal and swollen tissue from the horizontal section. Total ear ablation removes the entire ear canal, including the vertical and horizontal portions, along with bones of the middle ear and ear drum.
Considerations
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Total ear ablation requires a referral to a specialist with advanced skills. Even though this procedure may be risky and causes hearing loss, dogs may recover fully and have much more energy because they no longer live in pain.
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