One Affectionate Puppy: A Case of Septic Arthritis Due to Staphylococcus Pseudintermedius

We describe a case of septic arthritis caused by Staphylococcus pseudintermedius, a common colonizer of dogs that has emerged as a rare human pathogen. Our patient presented with ankle pain and swelling and was treated adequately with cefazolin/cephalexin and arthrotomy. S. pseudintermedius is often misidentified as other coagulase-positive staphylococcal species and has high rates of methicillin and nonpenicillin antibiotic resistance.

Automated summary

This case describes septic arthritis caused by Staphylococcus pseudintermedius, a common canine colonizer that has emerged as a rare human pathogen, often misidentified as other coagulase-positive staphylococcal species with high rates of antibiotic resistance. Treatment involves adequate antibiotics and arthrotomy.