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Table 1 Characteristics of the study subjects with dGEMRIC examination at the 20 years follow-up and available acute and/or chronic synovial fluid samples

From: Higher aggrecan 1-F21 epitope concentration in synovial fluid early after anterior cruciate ligament injury is associated with worse knee cartilage quality assessed by gadolinium enhanced magnetic resonance imaging 20 years later

  aBoth dGEMRIC and SF samples, n Time after injury to SF sampling Age at injury mean (SD) Men, % BMI at injury, mean (SD) BMI 20 years post injury, mean (SD)
Total study group 25 0 days to 7.5 years 24.5 (6.2) 52 23.6 (3.0) 25.3 (3.5)
  Subjects with SF samples, n Time after injury     
Acute samples 20 0–18 days (median 6 days)    
Chronic samples 22 0.5–7.5 years (median 4 years)    
  4 0.5–1.5 years     
  17 1.5–2.5 years     
  12 2.5–3.5 years     
  11 3.5–4.5 years     
  10 4.5–5.5 years     
  3 5.5–6.5 years     
  1 6.5–7.5 years     
  1. a 25 subjects with any kind of SF-samples (i.e. acute and/or one or more chronic samples): 3 subjects had only acute samples, 5 subjects had only chronic samples and 17 subjects had both acute and chronic samples. Delayed gadolinium enhanced MRI of cartilage (dGEMRIC) examination: mean = 20.6 years (range = 18 to 23 years) after injury. SF Synovial fluid, SD Standard deviation.