‘Barely a scratch’:Capnocytophaga canimorsuscausing prosthetic hip joint infection following a dog scratch

Abstract

is a commensal organism commonly found in the oral cavity of cats and dogs. Infections with this organism are rare and can affect both immunocompetent and immunocompromised individuals. The authors present a case of causing indolent prosthetic hip joint infection in a healthy 66-year-old woman following a history of being scratched by her pet dog. The patient had an atypical history of chronic, low-grade infection which is unusual, as this organism is more frequently associated with acute presentations and fulminant sepsis. This patient was treated successfully with a two-stage exchange of her hip prosthesis and broad-spectrum antibiotics. is a very rare cause of prosthetic joint infection but an important pathogen to consider, particularly in culture-negative joint infections and a history of animal exposure.

Hematogenous septic arthritis of a non-prosthetic shoulder caused by Capnocytophaga canimorsus: A case report and review of the literature

“…and ciprofloxacin p.o. 3 months Good clinical and biological evolution [19] 66 Man None Dog licks Right knee with TKA Surgical cleaning and prosthesis replacement Third generation cephalosporin i.v. relay by rifampicin and levofloxacin p.o.…”

A case of septic arthritis caused by Capnocytophaga canimorsus in an HIV patient

“…Very few cases of osteoarticular infections caused by Capnocytophaga canimorsus have been described in the literature. It has been reported in prosthetic hip and knee joint infections in immunocompetent patients as well as acute tenosynovitis of the ankle in an immunosuppressed patient [10][11][12][13][14].…”

Dogs: A Man’s Best Friend or a Deadly Beast—A Discussion on Capnocytophaga canimorsus

“…Once visible, colonies are smooth in appearance with "finger-like projections," non-hemolytic, catalase-positive, and oxidase-positive [11]. Due to the slow and variable growth of this organism, methods such as 16S ribosomal RNA PCR have been utilized in several case reports to rapidly identify C. canimorsus [4,12].…”

“…A 54year-old male presenting with a year-long right knee pain that started two years after total knee arthroplasty was successfully treated with prosthesis explantation, antibiotic spacer placement, a 4-week intravenous cefuroxime course followed by 2 weeks of oral ciprofloxacin and revision total knee arthroplasty [14]. A 66-year-old female presenting with a 4-month history of groin and hip pain, found to have a prosthetic hip joint infection, underwent a 2-stage revision right total hip arthroplasty with antibiotic spacer placement and reported a pain free hip 15 months later [12]. Finally, a 58-year-old female presenting with insidious left hip pain several weeks after a dog bite, found to have PJI, initially had an explant with irrigation and debridement, placement of antibiotic spacer, and ceftriaxone for 6 weeks.…”