There was no correlation between chondropathy score and spinal CB1 mRNA expression (Spearmans r: 0.38 p = 0.12), nor between chondropathy score and spinal COX-2 mRNA expression (Spearmans r: 0.20 p = 0.28), nor between chondropathy score and spinal TRPV1 expression (Pearsons r value of 0.42 p = 0.1831). Here, CNR1 is linked to cartilage disease.