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Pain & Adverse Behavior in Declawed Cats

June 2017|Web-Exclusive
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Pain & Adverse Behavior in Declawed Cats

In the Literature

Martell-Moran NK, Solan M, Townsend HGG. Pain and adverse behavior in declawed cats [published online May 1, 2017]. J Feline Med Surg. doi:10.1177/1098612X17705044


From the Page

Onychectomy (declawing) is a procedure performed in the United States and Canada to prevent cats from scratching and destroying property. As of June 2016, no studies incorporating modern pain assessment tools to evaluate patient pain following declawing could be found in a PubMed search.

This studys primary purpose was to determine any association between onychectomy, back pain, and adverse behaviors (eg, biting, aggression, inappropriate elimination, barbering [excessive licking or chewing of fur]). Another purpose was to identify the prevalence of P3 fragments remaining after declaw surgery and determine whether P3 fragments were associated with adverse effects when compared with declawed cats without P3 fragments.

This study included 274 cats137 cats had been declawed and 137 were not declawed. Each group consisted of 88 client-owned cats and 49 shelter cats. A single investigator examined each cat and assessed 2 years of medical history with respect to the declaw method used and the presence of back pain and adverse behaviors. Radiographs of declawed limbs were obtained and reviewed by a board-certified radiologist.

Statistical analysis indicated that the likelihood of back pain, periuria/perichezia, aggression, and barbering was significantly increased in declawed cats vs nondeclawed cats. Radiographic evidence of residual P3 fragments was found in 63% of declawed cats. Back pain, inappropriate elimination, biting, aggression, and/or barbering occurred more often in cats with retained P3 fragments, whereas only increased biting and inappropriate elimination habits were seen in cats without retained fragments.

The authors concluded that a clear association exists between declawing and the presence of deleterious side effects after a typical postoperative period, and that the prevalence of P3 fragments in declawed cats was excessive and surprising. The study showed persistent pain and discomfort following declaw surgery is an important risk factor for behavioral changes.


To the Practice

1

Veterinarians should carefully counsel clients on the potential for back pain and adverse behaviors that may occur once a cat is declawed.

2

If a practice performs onychectomy, optimum surgical technique should be used and steps taken to ensure no P3 fragments remain.

3

When assessing cats for nonspecific adverse behaviors (eg, aggression, biting, barbering, inappropriate elimination), veterinarians should consider the patients declaw status.

4

This studys findings may fuel a broader discussion within the profession on whether or not onychectomy should continue to be performed in North America.

 

—Compiled and summarized by Jennifer Kasten, DVM

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