BACKGROUND: The aims of our study were to evaluate the success rate of irrigation and debridement with component retention (IDCR) for acutely infected total knee arthroplasty (TKA) (< 4 weeks of symptom duration) and to analyze the factors affecting prognosis of IDCR. METHODS: We retrospectively reviewed 28 knees treated by IDCR for acutely infected TKA from 2003 to 2012. We evaluated the success rate of IDCR. All variables were compared between the success and failure groups. Multivariable logistic regression analysis was also used to examine the relative contribution of these parameters to the success of IDCR. RESULTS: Seventeen knees (60.7%) were successfully treated. Between the success and failure groups, there were significant differences in the time from primary TKA to IDCR (p = 0.021), the preoperative erythrocyte sedimentation rate (ESR; p = 0.021), microorganism (p = 0.006), and polyethylene liner exchange (p = 0.017). Multivariable logistic regression analysis of parameters affecting the success of IDCR demonstrated that preoperative ESR (odds ratio [OR], 1.02; p = 0.041), microorganism (OR, 12.4; p = 0.006), and polyethylene liner exchange (OR, 0.07; p = 0.021) were significant parameters. CONCLUSIONS: The results show that 60.7% of the cases were successfully treated by IDCR for acutely infected TKA. The preoperative ESR, microorganism, and polyethylene liner exchange were factors that affected the success of IDCR in acutely infected TKA.
Adult ; Aged ; Aged, 80 and over ; Anti-Bacterial Agents/therapeutic use ; Arthroplasty, Replacement, Knee/*adverse effects ; Arthroscopy ; Debridement ; Female ; Humans ; Joint Diseases/microbiology/surgery/therapy ; Knee Joint/microbiology/*surgery ; Knee Prosthesis/microbiology ; Male ; Middle Aged ; Prosthesis-Related Infections/etiology/microbiology/*therapy ; Retrospective Studies ; Therapeutic Irrigation ; Treatment Outcome

A case of Mycobacterium avium arthritis in a 39-year-old female patient with mixed connective tissue disease (MCTD) was reported. An extra-articular abscess had formed outside the knee joint and extended down the calf. A culture was taken of the abscess and synovial fluid disclosed Mycobacteriun avium. This was resistant to most anti-tuberculosis agents. A combination of anti-tuberculosis drugs followed a total resection of the abscess. We concluded that M avium septic arthritis could insidiously develop into an extra-articular abscess. A combination of anti-tuberculosis drugs with a total resection of the abscess was an effective treatment.
Adult ; Antitubercular Agents/therapeutic use ; Arthritis, Infectious/*microbiology/therapy ; Female ; Human ; Knee Joint/*microbiology/surgery ; Mixed Connective Tissue Disease/*complications ; Mycobacterium avium/drug effects/*isolation & purification ; Mycobacterium avium-intracellulare Infection/*complications/therapy