Prosthetic Joint Infection (PJI) is a severe complication following joint replacement surgery, imposing significant economic and health burdens on patients. For acute PJI, the DAIR (Debridement, Antibiotics, and Implant Retention) procedure is a necessary and effective treatment method, as it effectively clears the infection while preserving the prosthesis, thereby avoiding more complex surgical interventions. However, the practice of using drainage tubes postoperatively is controversial. Some studies suggest that drainage tubes may increase the risk of infection, while other literature indicates no statistically significant difference in infection risk associated with their use.In this context, Professor Li Cao's team at Xinjiang Medical University has improved the traditional DAIR procedure by incorporating long-term local antibiotic injections post-surgery, achieving positive results. Despite this, the specific method of antibiotic injection, particularly whether to use a drug infusion tube, remains under debate. The use of an infusion tube can reduce patient discomfort, shorten the local disinfection process, and theoretically decrease the time the incision is exposed to the external environment, potentially lowering the infection risk. However, the validity of these theoretical assumptions needs further confirmation through high-level scientific research. This study aims to evaluate whether there are differences in joint function recovery, changes in blood infection markers, and the incidence of postoperative complications between using and not using an infusion tube for local antibiotic injection after knee DAIR surgery. To assess the value of the infusion tube in local antibiotic injection post-knee DAIR surgery, a randomized controlled trial (RCT) will be conducted. Eligible patients will be randomly assigned to the infusion tube group (experimental group) or the non-infusion tube group (control group). The study will prospectively collect basic information, joint function scores, blood infection markers, and postoperative complication data from both groups, including patient age, gender, educational background, and postoperative blood test results. Ultimately, the RCT aims to demonstrate the therapeutic efficacy of the infusion tube method.
Age ≥18 years old, gender is not limited;
Meet the diagnostic criteria for DAIR surgery of artificial knee joint;
Receiving knee DAIR surgery;
Voluntary and signed informed consent.
Patients with chronic PJI infection undergoing total knee revision;
Patients with severe knee joint infection who cannot undergo artificial joint replacement;
Progressive renal insufficiency (stage 4 and above) or glomerular filtration rate less than 30ml/min;
periprosthesis infection after multiple joint replacement;
Parallel
Drug infusion into joint through catheter.
DeviceWith or without using catheter after DAIR operation for drug infusion.
Infection control rate
Infection control rate
Time between infection recurrence
Time between infection recurrence
Re-operation rate
Re-operation rate
X-ray
X-ray
American Knee Society Score （AKS score）
American Knee Society Score is used to evaluate the outcomes of knee replacement surgery. This scoring system consists of two main components: the knee score and the function score. Knee Score: This primarily assesses the condition of the knee joint itself, including pain, stability, and range of motion. The higher of the score, the better of the functional result.
Redness, Edema, Ecchymosis, Discharge, and Approximation score (REEDA score)
The REEDA score is a clinical tool used to assess the healing of perineal wounds and other skin wounds, particularly after childbirth. REEDA stands for Redness, Edema, Ecchymosis, Discharge, and Approximation. Each of these five parameters is scored on a scale from 0 to 3, with higher scores indicating more severe symptoms. The total REEDA score can range from 0 to 15.
Visual Analog Scale score
The VAS score, or Visual Analog Scale, is a tool commonly used to measure a person's level of pain. The VAS is a simple, subjective measure that consists of a straight line, typically 10 centimeters long, anchored by two endpoints. One end of the line represents "no pain" and the other end represents "worst pain imaginable." For example, if the VAS line is 10 cm long and the patient's mark is at 7 cm from the "no pain" end, their pain score would be 7 out of 10.
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