Efficacy of Local Antibiotic Injection Via a Catheter for Treating Acute Periprosthetic Infections After Knee DAIR Surgery

Infection control rate

Time between infection recurrence

Re-operation rate

X-ray

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.

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.

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.

White blood cell count from blood

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)

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).

Synovial fluid white blood count

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%.

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)

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)

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).

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).