[Total prosthetic knee and hip joint infection. Descriptive epidemiology, therapeutics and evolution in a secondary...

Area of Science:

• Orthopedic surgery
• Infectious diseases
• Epidemiology

Background:

• Total joint arthroplasty, including knee and hip replacements, is a common procedure.
• Infection following arthroplasty presents a significant challenge, impacting patient outcomes and healthcare costs.
• Understanding the epidemiology and causative agents of infected arthroplasty is crucial for effective management.

Purpose of the Study:

• To conduct an epidemiological description of infected total knee and hip arthroplasties.
• To analyze the classification, evolution, and therapeutic approaches for infected joint replacements.
• To identify the primary microorganisms responsible for arthroplasty infections.

Main Methods:

• Retrospective study of infected total knee and hip arthroplasties.
• Data collection from January 1, 1994, to December 31, 2003.
• Analysis of infection rates, patient demographics, etiological agents, and treatment outcomes.

Main Results:

• A global infection rate of 2.4% was observed in 1,666 joint implants.
• The knee was the most common site of infection (77.5%), with a mean patient age of 69.5 years.
• Gram-positive cocci, particularly Staphylococcus species, were the predominant causative agents (64.0%).
• Acute infections accounted for 45.0% of cases, with healing rates of 66.7% for the first and 83.3% for the second replacement.

Conclusions:

• Gram-positive cocci are the primary pathogens in infected knee and hip arthroplasties.
• Further research is needed to evaluate surgical techniques, novel antibiotics, and combination therapies for infected joint replacements.
• Optimizing treatment strategies for infected arthroplasty is essential for improving patient outcomes.