Surgical light handles: a source of contamination in the surgical field

Area of Science:

• Orthopedic Surgery
• Infectious Disease Control
• Microbiology

Background:

• Periprosthetic infection (PPI) is a severe complication of total hip arthroplasty (THA).
• The sources of bacterial contamination leading to PPI remain incompletely understood.
• Surgical light handles are frequently manipulated during procedures.

Purpose of the Study:

• To identify bacterial contamination on surgical light handles used in hip arthroplasty.
• To assess the potential risk these handles pose for causing periprosthetic infections.
• To evaluate the safety of using current light handles in THA surgery.

Main Methods:

• 36 surgical light handles from primary hip arthroplasty were cultured using two sensitive methods.
• Control samples were included to validate the findings.
• Bacterial cultures were incubated for up to 10 days, and isolates were identified.

Main Results:

• 50% of the tested surgical light handles showed positive bacterial cultures.
• Staphylococcus epidermidis and Staphylococcus aureus were the most prevalent bacteria identified.
• This indicates a significant bacterial presence on light handles during hip arthroplasty.

Conclusions:

• Manipulated surgical light handles represent a potential source of contamination during hip replacement surgery.
• The identified bacteria could contribute to the development of periprosthetic joint infections.
• Further investigation into handle disinfection protocols may be warranted to mitigate infection risk.