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Peer-reviewed veterinary case report

Septic arthritis in dogs causes, joints affected, and treatment

By Phillips, Tessa F & Bleyaert, Helga F·Published in The Veterinary record·2022·Surgery Department, United States·View original on PubMed

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Original publication title: Retrospective evaluation of 103 cases of septic arthritis in dogs.

Species:
dog

Plain-English summary

A group of dogs with septic arthritis, a painful joint infection, was studied to understand its causes and treatments. The most affected joints were the knee and elbow, and many of the dogs had pre-existing arthritis, which made them more likely to have recurring issues. Early treatment was crucial for a successful outcome, and dogs that received antibiotics before testing had less reliable results. Overall, most dogs recovered well, but those with higher body weights and existing arthritis were at a greater risk for future problems.

People also search for: dog knee pain infection · elbow arthritis in dogs · septic arthritis treatment for dogs

Abstract

OBJECTIVE: This study examines inciting causes, diagnosis, treatment and risk factors for the recurrence and outcome of septic arthritis (SA) in dogs. STUDY DESIGN: Medical records spanning 17 years from five referral hospitals were surveyed for presumptive and confirmed cases of SA. RESULTS: SA was identified in 103 cases. Spontaneous septic SA was the most common inciting cause. The most commonly affected joints were the stifle (40%) and elbow (24%). Pre-existing osteoarthritis (OA) was present in 63% of septic joints and was associated with recurrence (p = 0.03). Treatment with antibiotics prior to presentation was associated with a negative synovial fluid culture (p = 0.014). A successful outcome was associated with early treatment (p = 0.001) and SA due to direct penetration (p = 0.04) or spontaneous cause (p = 0.003). Recurrence was more likely in dogs with unsuccessful outcomes (p = 0.004) and bodyweights >30 kg (p = 0.009). CLINICAL SIGNIFICANCE: SA should be considered as a differential diagnosis in large breed dogs with pre-existing OA presenting with either an acute or chronic monoarthropathy. In the majority of cases, a successful outcome was achieved regardless of treatment type. Recurrence rates were low, but associated with pre-existing OA and higher bodyweight. Although treatment should be implemented as soon as possible to maximise outcome success, synovial fluid samples should ideally be obtained before empiric antibiotic administration.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34558080/