ACR	American College of Rheumatology
ADAMTS	A disintegrin and metalloproteinase with thrombospondin motifs
ASA	Acetylsalicylic acid
BMI	Body mass index
CI	Confidence interval
DMARD	Disease-modifying anti-rheumatic drug
DMOAD	Disease-modifying osteoarthritis drug
EDTA	Ethylenediaminetetraacetic acid
ELISA	Enzyme-linked immunosorbent assay
ESSKA	European Society of Sports Traumatology, Knee Surgery and Arthroscopy
FFQ	Food-frequency questionnaire
HGF	Hepatocyte growth factor
IGF	Insulin-like growth factor
IL	Interleukin
IQR	Interquartile range
LPS	Lipopolysaccharide
LP-PRP	Leukocyte-poor platelet-rich plasma
LR-PRP	Leukocyte-rich platelet-rich plasma
mL	milliliter
MMP	Matrix metalloproteinase
nL	nanoliter
NSAIDs	Non-steroidal anti-inflammatory drugs
OA	Osteoarthritis
OARSI	Osteoarthritis Research Society International
PDGF	Platelet-derived growth factor
pg	Picogram
PRP	Platelet-rich plasma
rpm	Revolutions per minute
SD	Standard deviation
SPSS	Statistical Package for the Social Sciences