Wound Hygiene Practices After Total Knee Arthroplasty: Does It Matter?

Area of Science:

• Orthopedic Surgery
• Infectious Disease Control
• Patient Care

Background:

• Limited literature exists on standardized postoperative surgical site hygiene following total knee arthroplasty (TKA).
• Current practices for postoperative wound cleaning timing are based on anecdotal evidence, increasing infection risk.
• Standardized wound care is crucial for minimizing infection after TKA.

Purpose of the Study:

• To investigate bacterial recolonization of surgical sites after TKA based on showering timing.
• To compare infection rates and bacterial species between early and delayed showering groups.
• To assess patient preference for early versus delayed showering post-TKA.

Main Methods:

• A randomized controlled trial involving 32 TKA patients, with 16 showering at 2 days and 16 at 2 weeks postoperatively.
• Surgical site skin swabs collected preoperatively, post-closure, at dressing removal, and at 2 weeks.
• Bacterial speciation and comparison between groups, with contralateral knee swabs as controls.

Main Results:

• No significant difference in bacterial colonization rates or types was observed between early and delayed showering groups.
• No surgical site infections occurred in either group.
• Patients strongly preferred early showering over delayed showering (P = .28-.99).

Conclusions:

• Early postoperative showering does not increase bacterial recolonization or infection risk after primary total knee arthroplasty.
• Patient preference favors early showering, aligning with clinical safety findings.
• Standardized protocols for postoperative hygiene, including showering, can be safely implemented earlier than traditionally believed.