Related Experiment Video
Updated: Feb 14, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
High bacterial contamination rate of electrocautery tips during total hip and knee arthroplasty
Hussein Abdelaziz1, Akos Zahar1, Christian Lausmann1
1Department of Orthopaedic Surgery, Helios ENDO-Klinik, Holstenstr. 2, 22767, Hamburg, Germany.
Purpose:
The aim of the study was to quantify the bacterial contamination rate of electrocautery tips during primary total joint replacement (TJR), as well as during aseptic and septic revision TJR.
Methods:
A total of 150 electrocautery tips were collected between April and July 2017. TJR surgeries were divided into three groups: (1) primary, (2) aseptic and (3) septic revisions. In each group, a total of 50 electrocautery tips were collected. A monopolar electrocautery with a reusable stainless-steel blade tip was used in all cases. The rate of bacterial contamination was determined for all groups. Correlation of exposure time and type of surgery was analyzed.
Results:
The overall bacterial contamination rate was 14.7% (95% CI 9.4 to 21.4%). The highest contamination rate occurred in the septic revision group (30.0%; 95% CI 17.9 to 44.6%), followed by the primary cases group (10.0%; 95% CI 3.3 to 21.8%) and the aseptic revision group (4.0%; 95% CI 0.5 to 13.7%). Exposure time did not affect the bacterial contamination rate. In 12 out of 15 (80%) contaminations identified in the septic group, we found the same causative microorganism of the prosthetic joint infection on the electrocautery tip.
Conclusions:
The bacterial contamination of the electrocautery tips is relatively high, especially during septic hip revision arthroplasty. Electrocautery tips should be changed after debridement of infected tissue.
Insights
Bacterial contamination of electrocautery tips is common during total joint replacement (TJR), particularly in septic revisions. Changing tips after debriding infected tissue is recommended to reduce infection risk.
Area of Science:
- Orthopedic Surgery
- Infectious Disease Control
- Surgical Instrumentation
Background:
- Electrocautery is widely used in total joint replacement (TJR) surgery.
- Contamination of surgical instruments can lead to surgical site infections.
- Quantifying bacterial contamination of electrocautery tips is crucial for infection prevention strategies.
Purpose of the Study:
- To determine the bacterial contamination rate of electrocautery tips during primary, aseptic revision, and septic revision TJR procedures.
- To analyze the correlation between bacterial contamination and the type of TJR surgery.
Main Methods:
- 150 electrocautery tips were collected from TJR surgeries (primary, aseptic revision, septic revision).
- Each surgical group contributed 50 electrocautery tips.
- Bacterial contamination rates were determined, and exposure time and surgery type were analyzed.
Main Results:
- The overall bacterial contamination rate was 14.7%.
- Septic revision TJR showed the highest contamination rate (30.0%), followed by primary TJR (10.0%) and aseptic revision TJR (4.0%).
- In septic revisions, 80% of contaminated tips harbored the same microorganism causing the joint infection.
Conclusions:
- Electrocautery tip contamination is a significant concern, especially in septic revision TJR.
- A high rate of contamination in septic revisions suggests potential for intraoperative bacterial spread.
- Recommendations include changing electrocautery tips after debriding infected tissue to mitigate infection transmission.
Related Concept Videos
Contaminants and Errors
Another key consideration is determining the appropriate number of samples required to...
Knee Joint
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
Reaction Rate
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
Related Rates
Speciation Rates
Temperature Dependence on Reaction Rate
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...

