Fig. 4From: MMP-3 in the peripheral serum as a biomarker of knee osteoarthritis, 40 years after open total knee meniscectomyMultiple regression model incorporating patient GAG levels pre- and post-surgery and MMP3 levels post-surgery to predict patient quality of life. The model shows quality of life (QoL) fits with an R2 of 0.9998 and a p value = 0.0087Back to article page