Analysis and Management of Hemarthrosis Joint Fluid

Diagnostic Approach

The American College of Radiology recommends diagnostic arthrocentesis with synovial fluid analysis, including total cell count, differential leukocyte count, and aerobic/anaerobic cultures, for proper diagnosis and management of hemarthrosis joint fluid 1, 2
The Infectious Diseases Society of America recommends synovial fluid analysis, including total cell count and differential leukocyte count, and aerobic and anaerobic cultures, for the diagnosis of joint infection 1, 2, 3
The American College of Radiology suggests that crystal analysis should be performed if clinically indicated to rule out crystalline arthropathy 1, 3
Withholding antimicrobial therapy for at least 2 weeks prior to joint aspiration increases the likelihood of recovering an organism, according to the Infectious Diseases Society of America 1, 4
Serum inflammatory markers, including erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), should be obtained to detect infection, as recommended by the Infectious Diseases Society of America 1, 2, 5
Plain radiographs should be performed in all cases of suspected joint hemarthrosis, as recommended by the American College of Radiology 1, 2
Blood cultures should be obtained if fever is present, symptoms are acute in onset, or if there's suspicion of bloodstream infection, according to the Infectious Diseases Society of America 1, 6

The American College of Radiology recommends that joint aspiration can be performed with fluoroscopic, ultrasound, or CT guidance 7, 8
Multiple samples (3-6) should be collected during aspiration, as recommended by the Infectious Diseases Society of America 1, 8
The test should be considered positive when two specimens grow the same organism with identical antibiogram, according to the American College of Radiology 8
Repeat aspiration may be necessary if the first aspiration is negative but clinical suspicion for infection remains high, as recommended by the American College of Radiology 8, 9
In cases related to prosthetic joint hemarthrosis, intraoperative histopathological examination of periprosthetic tissue samples should be performed if infection is suspected, according to the Infectious Diseases Society of America 1, 5

False-negative aspirations may occur in patients who have received antibiotics prior to aspiration, as noted by the American College of Radiology 8
Advanced imaging studies should not be routinely used to diagnose joint infection, according to the Infectious Diseases Society of America 1, 9
Gram stain has relatively poor sensitivity and specificity for diagnosing joint infection, as reported by the American College of Radiology 8, 9