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Infection in primary total knee replacement.

Jason C H Fan1, H H Hung, K Y Fung

  • 1Department of Orthopaedics and Traumatology, Alice Ho Miu Ling Nethersole Hospital, Tai Po, Hong Kong. fchjason@netvigator.com

Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi
|February 2, 2008
PubMed
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This study found primary total knee replacement infection rates comparable to international standards. While diabetes showed a trend towards higher risk, no statistically significant factors were identified for infection prevention.

Area of Science:

  • Orthopedic Surgery
  • Infectious Disease Epidemiology

Background:

  • Surgical site infections (SSIs) are a significant complication following total knee replacement (TKR).
  • Identifying infection rates and risk factors is crucial for improving patient outcomes and developing effective preventive strategies.

Purpose of the Study:

  • To determine the infection rate of primary total knee replacement (TKR) in a general hospital setting.
  • To identify potential risk factors associated with TKR infections.
  • To discuss possible preventive measures for TKR infections.

Main Methods:

  • A retrospective study design was employed.
  • Data from 479 primary total knee replacements performed between July 1997 and June 2006 at a regional hospital in Hong Kong were reviewed.
  • Infection rates and their relationship to various risk factors were analyzed.

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Main Results:

  • The overall infection rate for primary total knee replacement was 3.0% (14/472).
  • Deep infection rates included acute (0.2%), delayed (0.6%), and late (0.6%). Superficial infection rate was 1.9%.
  • Diabetic patients exhibited a three-fold higher risk of infection, though this did not reach statistical significance (P=0.077).

Conclusions:

  • The infection rates observed in this study are comparable to international benchmarks for primary total knee replacement.
  • Standardized surgical protocols, including prophylactic antibiotics and sterile techniques, were consistently applied.
  • Further research may be needed to confirm the statistical significance of diabetes as a risk factor and to explore other potential preventive measures.