1. Effect of flare reaction to intra-articular injection on cartilage lubricating ability of human synovial fluid 
T.E. Ludwig, J.R. McAllister, V.M. Lun, J.P. Wiley, T.A. Schmidt 
Osteoarthritis and Cartilage 
Volume 21, Pages S299-S300 (April 2013)
DOI: /j.joca
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2. Figure 1
[PRG4] in flare-SF after IA HA or corticosteroid injection. [PRG4] ±SEM in normal (NL) SF (N=29) shown by black lines. Samples selected for friction testing (HA flare only) are circled.
Osteoarthritis and Cartilage  , S299-S300DOI: ( /j.joca )
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3. Figure 2
HAMW distribution in N=4 PRG4-deficient flare-SF samples selected for friction testing and N=14 normal (NL) SF (#= p<0.05)
Osteoarthritis and Cartilage  , S299-S300DOI: ( /j.joca )
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4. Figure 3
Kinetic friction coefficient (<μkinetic,Neq>) at Tps=1.2 s of PRG4 deficient flare-SF with 450 μg/mL PRG4 and 1.0 mg/mL 1.5 MDa HA supplementation, and NLSF.
Osteoarthritis and Cartilage  , S299-S300DOI: ( /j.joca )
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