Methicillin-resistant staphylococcal infections: an important consideration for orthopedic surgeons

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Wael E Shams1, Robert P Rapp

  • 1Division of Infectious Diseases, Department of Internal Medicine, University of Kentucky School of Medicine, Lexington, KY, USA.

Orthopedics
|July 9, 2004
PubMed

Insights

Screening orthopedic patients for methicillin-resistant Staphylococcus aureus (MRSA) and similar bacteria before surgery can reduce postoperative infections. Decolonization strategies are crucial for preventing surgical site infections in patients with joint prostheses.

Area of Science:

  • Orthopedic Surgery
  • Infectious Diseases
  • Microbiology

Background:

  • Postoperative infections in joint prostheses and fracture-fixation devices frequently involve MRSA and methicillin-resistant coagulase-negative staphylococci.
  • Community-acquired MRSA is an increasing concern for hospitalized patients.
  • Preoperative colonization with these resistant staphylococci elevates the risk of surgical site infections in orthopedic patients, with up to 5.3% of patients colonized on admission.

Purpose of the Study:

  • To evaluate the impact of screening and decolonization of methicillin-resistant staphylococci on postoperative surgical site infections in orthopedic patients.
  • To highlight the importance of these measures, particularly for orthopedic implants where treatment of infection is challenging.

Main Methods:

  • Review of current literature and guidelines regarding MRSA and methicillin-resistant coagulase-negative staphylococci screening and decolonization in orthopedic surgery.
  • Analysis of the incidence of postoperative surgical site infections in relation to preoperative colonization status.
  • Assessment of factors influencing the salvageability of infected orthopedic prostheses.

Main Results:

  • Screening and decolonization of methicillin-resistant staphylococci have been shown to decrease the incidence of postoperative surgical site infections in orthopedic patients.
  • Current US guidelines recommend screening only for patients with identified risk factors.
  • Emerging evidence supports universal screening and decolonization for all elective orthopedic procedures, especially those involving prosthetic implants, to reduce infection rates.

Conclusions:

  • Proactive screening and decolonization of methicillin-resistant staphylococci in orthopedic patients undergoing elective procedures, particularly with implants, can significantly lower the incidence of postoperative infections.
  • Early intervention (within 10 days of symptom onset), implant stability, and antibiotic susceptibility are key factors for potentially salvaging an infected prosthesis.

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