Efficacy of Local Antibiotic Injection Via a Catheter for Treating Acute Periprosthetic Infections After Knee DAIR Surgery
NCT Number: NCT06468163
Acronym: YES
Status: NOT_YET_RECRUITING
Study Type: INTERVENTIONAL
Phases: NA
Conditions: Local Antibiotic Injection Catheter Acute Periprosthetic Infections Knee DAIR Randomized Controlled Trial
Interventions: DEVICE: Drug infusion into joint through catheter.
Sponsor: First Affiliated Hospital of Xinjiang Medical University
Sex: ALL
Age: ADULT, OLDER_ADULT
Enrollment: 200
Study Design: Allocation: RANDOMIZED|Intervention Model: PARALLEL|Masking: SINGLE (OUTCOMES_ASSESSOR)|Primary Purpose: TREATMENT
Start Date: 2024-08-01
Completion Date: 2026-12-31

Summary:
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.

Primary Outcome Measures: Infection control rate, Infection control rate, Two year after surgery|Time between infection recurrence, Time between infection recurrence, Two year after surgery|Re-operation rate, Re-operation rate, Two year after surgery
Secondary Outcome Measures: X-ray, X-ray, One day before surgery and two years after surgery|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., One day before surgery and two years after surgery|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., One day before surgery, three month after surgery|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., One day before surgery and two years after surgery|White blood cell count, White blood cell count from blood, One day before surgery and one day after surgery|Erythrocyte sedimentation rate (ESR), It measures the rate at which red blood cells settle to the bottom of a test tube within one hour.

Normal ranges:

Male: 0 to 15 millimeters per hour (mm/hr) Female: 0 to 20 millimeters per hour (mm/hr), One day before surgery and one day after surgery|C-reactive protein (CRP), C-reactive protein (CRP) is a protein produced by the liver that significantly increases in response to inflammation or infection. Normal range for CRP is less than 10 milligrams per liter (mg/L)., One day before surgery and one day after surgery|Synovial fluid white blood count, Synovial fluid white blood count, One day before surgery and one day after surgery|Polymorphonuclear neutrophil percentage in synovial fluid (SF-PMN), Polymorphonuclear neutrophil percentage in synovial fluid refers to the proportion or percentage of polymorphonuclear neutrophils (PMN) present in the synovial fluid. This measurement is important in the assessment of joint health and inflammation, particularly in conditions such as arthritis and infections affecting the joints. Normal range: Less than 80%., One day before surgery and one day after surgery|Alanine Aminotransferase (ALT), An enzyme found in the liver that helps convert proteins into energy. Elevated levels indicate liver damage. Normal range: 10 to 40 units per liter (U/L), One day before surgery and one day after surgery|Aspartate Aminotransferase (AST), An enzyme found in the liver and other tissues. High levels can indicate liver damage but are less specific than ALT. Normal range: 10 to 40 units per liter (U/L), One day before surgery and one day after surgery|Serum Creatinine, Measures the level of creatinine in the blood. Elevated levels can indicate impaired kidney function. Normal range: 62 to 115 micromoles per liter (µmol/L)., One day before surgery and one day after surgery|Blood Urea Nitrogen （BUN）, Measures the amount of nitrogen in the blood that comes from urea. Elevated BUN levels can indicate impaired kidney function. Normal range: 2.5 to 7.1 millimoles per liter (mmol/L)., One day before surgery and one day after surgery